Ok I guess you get the answer, here is another one for non-german people =)
Powerban is a project started by one of the most famous french clan, SG. The goal is to gather banlists from different trusted clans and make them publicly available to fight cheaters more efficiently. From this link
http://www.snipersgaulois.com/bans.powerban.php you can generate the banlist you want according to the various sources. This list contains UAA bans too.
With the new B3 version I installed Courgette banlist plugin, which uses this list and update it every hours. If someone connects with an IP address found in the list, he is kicked and you get the "XXX is banned by Powerban" message.
At the moment dswp is not part of this project, it sure would be lots of additional cheaters IP addresses, but I'm not sure if it's worth it until the 4.2 is released.
Don't worry you won't be powerbanned, unless you cheat
Better not by the way, or else you would be instantly banned from more than 50 UrT servers :p