The one on site is a bit outdated (Dec 25, 2010)—there are Excadrill and Thundurus mentions, and it could be emphasized more that Scolipede is one of the fastest Spikers now that Deoxys-S is gone. I still think it's viable in OU because Deoxys-S is gone, and Scolipede filled that quick Spiker role for me. There are also a few lower tier mentions--Pokemon one would rarely see in OU currently. I'm also iffy about that Swords Dance set.
Thanks to Zy, for the original, from which I took some stuff.
[Overview]
[SET]
name: Support
move 1: Spikes
move 2: Toxic Spikes
move 3: Megahorn
move 4: Earthquake / Rock Slide
item: Life Orb
nature: Jolly
ability: Swarm
EVs: 4 HP / 252 Atk / 252 Spe
[SET COMMENTS]
[ADDITIONAL COMMENTS]
<p>Life Orb is probably the best item as it allows Scolipede to net OHKOs on most Tyranitar variants. However, if you are leading with Scolipede, Focus Sash is an option to get at least one layer of Spikes on the field. The last item to be considered is Leftovers—this is somewhat ineffective though, since Scolipede isn't meant to tank multiple hits.</p>
[SET]
name: Swords Dance
move 1: Swords Dance
move 2: Megahorn
move 3: Earthquake
move 4: Baton Pass / Rock Slide
item: Life Orb
nature: Jolly
ability: Swarm
EVs: 252 Atk / 4 Def / 252 Spe
[SET COMMENTS]
[ADDITIONAL COMMENTS]
<p>X-Scissor is an option but should only be considered if you have severe accuracy headaches as it is much weaker and doesn't OHKO Latios, Latias, nor Tyranitar without a boost. If you have nothing to Baton Pass to, then Rock Slide should have the go-ahead in the final slot, hitting the aforementioned threats as well as Gengar, and breaking Air Balloon. However, it is generally a good idea to have offensive complements to Scolipede since it is rather frail and prone to revenge killing. Landorus, Terrakion, and physical Virizon are good recipients, as they can get past physical walls such as Gliscor after a boost.</p>
[Other Options]
[Checks and Counters]
[Dream World]
Thanks to Zy, for the original, from which I took some stuff.
[Overview]
<p>Scolipede possesses overall mediocre stats bar a "selective" base 112 Speed, but such Speed is all it needs to function. With the departure of Deoxys-S, the position for a fast Spiker was vacant, while candidates to fill this role boil down to Deoxys-D, Accelgor, and Scolipede. While each has its advantages, Scolipede boasts a STAB Megahorn, dealing massive amounts of damage to common Pokemon such as Tyranitar and Latios. Furthermore, it has a handy 4x resistance to Fighting, among other small perks. These are just enough to justify Scolipede's role on a team in a position you might otherwise want to use Scizor in.</p>
[SET]
name: Support
move 1: Spikes
move 2: Toxic Spikes
move 3: Megahorn
move 4: Earthquake / Rock Slide
item: Life Orb
nature: Jolly
ability: Swarm
EVs: 4 HP / 252 Atk / 252 Spe
[SET COMMENTS]
<p>Access to both Spikes and Toxic Spikes differentiates Scolipede from Accelgor and gives the former a rather specific niche. Offensive teams that need Spikes support for its sweepers can depend on Scolipede to get at least one layer up—two with clever playing, and possibly even three. Scolipede can also hit Taunt users hard with STAB Megahorn. Toxic Spikes support is just as easy, though offensive teams may not need those entry hazards. If this is the case, you can use Rock Slide for additional coverage with Megahorn and Earthquake. These two moves are the best choices in slots three and four: Megahorn can OHKO all offensive Tyranitar variants, and it has a chance to OHKO defensive ones as well, and Earthquake provides coverage with Megahorn, hitting Steel-types such as Heatran. If Scolipede is using Toxic Spikes, Earthquake can be swapped out for Rock Slide, which covers the Flying-types that resist Megahorn.</p>
[ADDITIONAL COMMENTS]
<p>Life Orb is probably the best item as it allows Scolipede to net OHKOs on most Tyranitar variants. However, if you are leading with Scolipede, Focus Sash is an option to get at least one layer of Spikes on the field. The last item to be considered is Leftovers—this is somewhat ineffective though, since Scolipede isn't meant to tank multiple hits.</p>
<p>Pursuit is an option over Toxic Spikes, since with it Scolipede can trap Latios and Latias pretty well, dealing around 75% if they are switching. If no offensive presence is necessary, Scolipede can run 252 EVs in HP instead of Attack; however, this is a significant drop in power, as Scolipede will no longer be able to 2HKO Reuniclus. Speaking of the jelly, one of your own will benefit from Toxic Spikes, as Calm Mind variants in particular will be able to stall out Blissey and other special walls while boosting. Volcarona is another Pokemon that likes Scolipede, as Scolipede is able to soak up Toxic Spikes and provide either hazard to soften the opponent. Heatran is helpful in that it takes the Fire-type moves aimed at Scolipede and can set up Stealth Rock. Strong special attackers will also capitalize on the extra damage Spikes attains, leading to quicker KOs. Likewise, scouting Pokemon, such as U-turn Scizor, can force the necessary switches for Spikes to break apart the opponent's team.</p>
[SET]
name: Swords Dance
move 1: Swords Dance
move 2: Megahorn
move 3: Earthquake
move 4: Baton Pass / Rock Slide
item: Life Orb
nature: Jolly
ability: Swarm
EVs: 252 Atk / 4 Def / 252 Spe
[SET COMMENTS]
<p>With a unique base 112 Speed and decent Attack, Scolipede can pull off a sweeping set. Swords Dance facilitates this sweep, doubling Scolipede's Attack. Megahorn is a great STAB move to have, giving Scolipede a way to hit hard without a boost. Earthquake is the best coverage move, hitting Steel-types such as Heatran and Magnezone super effectively. The last slot is a bit of a toss up. Baton Pass gives Scolipede utility, passing its boosts when it runs into a tough wall. However, Rock Slide gives a smidgen of extra coverage, hitting Volcarona in particular.</p>
[ADDITIONAL COMMENTS]
<p>X-Scissor is an option but should only be considered if you have severe accuracy headaches as it is much weaker and doesn't OHKO Latios, Latias, nor Tyranitar without a boost. If you have nothing to Baton Pass to, then Rock Slide should have the go-ahead in the final slot, hitting the aforementioned threats as well as Gengar, and breaking Air Balloon. However, it is generally a good idea to have offensive complements to Scolipede since it is rather frail and prone to revenge killing. Landorus, Terrakion, and physical Virizon are good recipients, as they can get past physical walls such as Gliscor after a boost.</p>
<p>Ferrothorn is a good partner for setting up Stealth Rock and Spikes to ease Scolipede's sweep while Scolipede also gains an opportunity to switch in on Fighting-type moves directed at Ferrothorn. A spinner is also a good partner for Scolipede as it is weak to Stealth Rock. Donphan in particular resists Rock-type moves and can provide Stealth Rock support. Starmie is another good spinner, complementing Scolipede's powerful physical attacks with its special ones.</p>
[Other Options]
<p>There are a few other options for Scolipede. One of them is the combination of Screech and Pursuit—Screech harshly lowers the opponent's Defense, coercing them to switch out, only to be caught by a more powerful Pursuit. However, the imperfect accuracy of Screech, popularity of priority attacks, and general slew of damage make this a gimmicky tactic for Scolipede to carry out. Substitute with the Swarm ability is another option, setting up Substitute to activate Swarm for an extra powerful Megahorn. However, a Scolipede with low HP means it will be defeated quickly, especially by priority moves. Finally, a full Baton Pass set is possible, but in that case, you are better off running a chain with better suited Pokemon.</p>
[Checks and Counters]
<p>Despite Megahorn's power, common physical walls such as Skarmory, Forretress, and Gliscor resist Bug and thus wall Scolipede very well. Fire-types are in the same boat—as long as they avoid Earthquake (or Rock Slide in Volcarona's case), they can KO Scolipede with their STAB moves. Sableye, while unable to switch directly in to Megahorn, can cripple Scolipede with Will-O-Wisp and proceed to stall it out. Faster Pokemon, namely Choice Scarf users, outspeed and take Scolipede down easily due to its low defenses: Rotom-W smacks it with a Hydro Pump or Thunderbolt, and Terrakion can OHKO with Stone Edge.</p>
[Dream World]
<p>Quick Feet is not useful on Scolipede. It is already quite fast, and more importantly, it is immune to Poison. Thus it must be burned to activate the ability, which is awfully counterproductive considering Scolipede is a physical attacker.</p>