OK I only did this for the first paragraph but at the beginning of each one you have to add in "<p>" and at the end add in "</p>" as I did for the overview.
[Overview]
<p>Ferrothorn is one of the best strongest tanks in the VGC 2012 metagame, with high defensive stats rivaling that of many Uber Pokemon (not sure if you should be referencing Ubers here…maybe just talk about Ferrothorn's high defense and NOT compare it, or say that it's better than most of its competition). Ferrothorn's strong defenses are backed up by its superb typing, Grass / Steel, (insert comma) which leaves it weak to just two types of attacks, Fighting and Fire. More importantly, it resists many attacking typesattacks commonly used in the VGC 2012 metagame, including Water, Rock, Electric, and DragonWater-, Rock-, Electric-, and Dragon-type attacks. This allows Ferrothorn to switch in with relative ease and set up Leech Seed. Ferrothorn is at its best against teams based around rain, as it walls many common threats to rain teams. Ferrothorn is not without its weaknesses, however. Its 4x weakness to Fire-type attacks make it extremely vulnerable to a number of common Pokemon in the VGC 2012 metagame, and one must be very careful when playing with Ferrothorn to avoid getting caught off guard by onean unexpected Fire-type attack. Lastly, Ferrothorn's paltry base 20 Speed makes it one of the slowest pokemon in the VGC 2012 metagame. This can be taken advantage of with Trick Room, or you can just accept that Ferrothorn will move last every turn.</p>
[SET]
name: Tank
move 1: Leech Seed
move 2: Protect
move 3: Power Whip
move 4: Gyro Ball
item: Leftovers
ability: Iron Barbs
nature: Relaxed (+Def, -Spe)
evs: 252 HP / 148 Def / 108 SpD
ivs: 0 speed
[SET COMMENTS]
This moveset for Ferrothorn takes best advantage of Ferrothorn's capabilities by focusing on itsit's defensive potential while still allowing it to threaten opposing Pokemon. Your main plan with Ferrothorn is should be to Leech Seed your opponent's Pokemon and stall with Protect. Power Whip's damage potential is not to be underestimated, as Ferrothorn has a reasonable base 94 Attack and receives a STAB bonus on the attack. Ground- and/Water-type Pokemon, such as Gastrodon and Swampert, are common in the VGC 2012 metagame, and Power Whip scorestakes advantage of them by scoring a 4x super effective hit on both of them. Gyro Ball takes advantage of the STAB bonus in addition to Ferrothorn's low Speed stat, but unfortunately does not have good coverage but keep in mind the poor coverage of Steel-type attacks.
[ADDITIONAL COMMENTS]
A Relaxed nature is used to maximize Ferrothorn's stats (how so? explain this further.), and the focus is placed on Defense EVs is because the majority of the Pokemon that threaten Ferrothorn are physical attackers. Because As Ferrothorn resists most commonly seen special attacks, it doesn't need a lot of investment in Special Defense. The given EV spread allows Ferrothorn, if originally at full health, to survive three Blizzards from Abomasnow provided that you still have two Pokemon on your side of the field, which will limit Abomasnow's Blizzard Even in unfriendly weather conditions, with hail damage negating Leftovers recovery, these EVs allow Ferrothorn to survive 3 Blizzards from Abomasnow, provided that you still have 2 Pokemon on the field so that Blizzard is not at full power. It is possible to use a more specially defensive EV spread, which would allow Ferrothorn to take Heat Wave from Pokemon such as Infernape and Zapdos more comfortably; this would also enable Ferrothorn to wall Water-type Pokemon even more easily. You can also elect to run even more Defense EVs, which would help against physically based(the examples that you gave are physical anyways so there's really no need to say this. Anyways, most Fighting-types are physical) Fighting-type threats such as Hitmontop and Terrakion.
[Other Options]
Other move options include Substitute, Toxic, Thunder Wave, and Explosion. Bear in mind that some Grass-types have a Poison secondary typing and are thus immune to both Leech Seed and Toxic.Additionally, ifSubstitute is preferable in Trick Room, since it will allow Ferrothorn to use the move before potentially being hit by a status move, one of its prime downfalls. Toxic is an option for more passive damage, but it should be noted that Poison- and Grass-types, Poison Heal Breloom, and other Ferrothorn are immune to both Toxic and Leech Seed. If you use Thunder Wave, Gyro Ball should be replaced with Iron Head because it will be much weaker due to the opponent's lower Speed. Explosion allows Ferrothorn to go out with a bang, but make sure that its teammate either resists or is immune to the move.Substitute is preferred if you are using Trick Room, because Ferrothorn will get a chance to put up a Substitute before getting hit with a status move, one of it's main weaknesses. A more attack-focused set is possible - ; with 244 Attack EVs and a Brave nature, Gyro Ball will OHKO a number of common Pokemon, including Toxicroak. This setup can catch an opponent off guard, but Ferrothorn will not be able to take hits as well. One possible way to enjoy the best of both worlds would be to set up Trick Room, enabling Ferrothorn to move before Pokemon that threaten it and knock them out with a powerful Gyro Ball or Power Whip. As for items, Occa Berry is an option to help Ferrothorn survive one Fire-type attack, but Leftovers offers more long-term sustainability.
[Checks and Counters]
Zapdos counters Ferrothorn very well, taking minimal damage from its attacks and 2HKOing it with Heat Wave. Fire-type Pokemon such as Chandelure, Ninetales, and Infernape threaten to OHKO Ferrothorn and are unafraid of it as well. Salamence and Togekiss are other special attackers that have access to Heat Wave, and the move is always an option on them if you feel that Ferrothorn is a threat to your team Other special attackers such as Salamence and Togekiss have the option of using Heat Wave ifyou feel that Ferrothorn is a threat to your team. Hitmontop has a 68.75% chance to OHKO the standard Ferrothorn with Fighting Gem-boosted Close Combat and does not take significant damage from Ferrothorn in return. Hidden Power Fire is an option on any special attacker to deal with Ferrothorn easily, but is not recommended unless your team has you can afford to use it at little cost and have a significant weakness to Ferrothorn. Pokemon packing sleep-inducing moves can keep Ferrothorn in check for a time, as they will almost assuredlyoutspeed it and put it to sleep before it can move. However, most Pokemon that commonly carry sleep moves in VGC 2012 cannot deal significant damage to Ferrothorn, so it is unwise to rely solely on them to defeat Ferrothorn.