Sorry for double post, but I feel that this warrants it
First, Welcome to Smogon! I hope you enjoy your stay ^_^
1. Assuming that they are legit, all of them will make it through Pokemon Bank
2. Yes
3. Never heard of this, nor have I been affected by it. I imagine that things obtained through Glitzer Popping, etc may cause some data to be corrupted, however.
4. They'll make it through
5. These too
6. You can have any date, and this is commonly used in RNG manipulation (eg I had to set the date to the year 2031 for an RNG I did on my White).
7. Many transferred Pokemon cannot participate in official tournaments/competitions that are
actually run by Nintendo (the exception to this was the Kanto Classic, where transferred Pokemon were allowed). In Smogon metagames, no such restrictions on transferred Pokemon apply.
8. Most of your questions should be answered either
here or
here.
9. In the
Wi-Fi forum. There are a whole bunch of threads here, which are known as Trade Threads. You can comment in the user's thread with whom you wish to trade, but be sure to read their rules (many require you to have a thread of your own). There's also the
Giveaways forum, where you can get stuff for free.
10. Well this seems to be the right place, but you can also ask less specific question on the
Smogon Simple Questions thread.