If you are not sure whether you are banned or no, you could use a tool such this: http://ctrlq.org/sandbox/
If you see ads showing then your site is NOT banned.
Happened to me 2 times, got banned because of Clicks Fraud, the second time I didn't even start using and showing the ads. So just you know I applied for the second time with my real and same name as the first time, and got accepted, but after 1 year or so.
If your community is somehow BIG and...
Hi there KatieH.
Cal is totally right about what he said. Splitting your community that way wont help you.
Even if you say so, I assume the people who gonna register on your new board would be the old members from the original board, this is somehow bad atleast for me, since your members are...