I remember reading some hullaboo about that... but I don't know how they are going to be real successful about it. I can see if the company has a presence in both the EU and the US - but US standalone company I don't really see how they can force that since that company is then being forced to provide a service for a country that they have no representation in?
But it wouldn't surprise me.. tax law is weird and just an attempt by governments to dig money outta folks pockets. The more avenues they can open, they happier they are!
Get off of IPB! You won't regret it. I was with Invision since 2000 (ikonboard, ipb, etc). My db was 2+GB in size, over 1 million posts, huge board... I was able to perform the conversion in a few hours. I also migrated my entire gallery as well. I couldn't be happier with Xenforo. This community is great, the developers are extremely helpful, and the software is fantastic. My members love Xenforo. Engagement has been trending up. With IPB it was decreasing.