Seeing that the IM Shield already supports Gadu-Gadu, Tlen (two most popular messenger protocols here) and Jabber, I would love it to also support AQQ.
It's quite a popular alternative messenger here in Poland, that "understands" Gadu-Gadu connections directly, Tlen connections throught a plugin, and uses it's own Jabber connection for two versions of the AQQ protocol.