I found out by accident that Trillian allows multiple SNs to be on at the same time on AIM.
I knew it allowed it for IRC but then so does mIRC while AIM itself doesn't appear to (or at least I haven't worked out how to).
The comm info doesn't have SNs listed and I'm not going to put any up but I will put the here, for the record.
majinbakahentai - Majinbakahentai
aduvagorion_elf - aduvarmun
findekano_eu - Findekano47
vardagilthoniel - VardaBaka
lord_sulimo - Sulimo247
It was hell trying to get those two for Varda and Manwë, every coombo I could think of was taken already. If any sevilians saw Manwë's and Fingon's they'd probably recognise the numbers as well.
There is another one but it is now my private one, the one I have one when I want to hide.