I suspect, for liability reasons, the forum would be restricted to simply a set of links to various gambling tax sites/laws on other sites. By creating a forum specifically for tax question, and given 2+2 is moderated, I'd be paranoid about someone who got audited coming back at 2+2 saying "They created a forum just for tax questions and they moderate it. 2+2 has a responsibility to ensure posts won't condone illegal tax actions".

Not saying 2+2 actually would bear any such responsibility, but just the cost of defending in such a suit would be problematic.