Web based forums and message boards

I was looking at how could I setup a web discussion forum.
I found that there were two easy choices

1. Use PHPBB2 (www.phpbb.com) - This is PHP based. I found a site that provides free PHPBB2 forums. www.galacnet.com. PHPBB2 looks really good and easy to setup. Within 30 minutes, I had setup a simple structure (http://phpbb.galacforums.com/Nephrotic_Syndrome/). Using the free server had the issue that half the screen was filled with advertisements. One downside was that it is not easy to install plugins and mods for Phpbb on this server.
2. Use Community Server::Forums (www.communityserver.org) - This is ASP.NET based. My hosting provider automatically installs this application. It is a nice Forums + BLOGs+ Photo Gallery application. On the plus side - it has built-in RSS feeds for all public forums. However in an anonymous post - it does not let the person type in a name. Slightly annoying because a lot of times, the anonymous user doesn't mind writing the name - just cannot register.

Final decision: Use Community Server::Forums since I can remove all advertisements on that Forum.

Migrating messages is the next challenge. The current message board is run on www.siteboard.de. So I needed a program to download all the messages, while preserving the message - response-reply relationships and dates etc. At this point I've written a short Perl program [download]that can download an entire forum from www.siteboard.de and save it as a Perl Data::Dumper file.