Actually ICQ was first then AOL bought them and copied there software.I'm working under the assumption that AOL plans to fix this CPU issue:
VM: 3.02G + 49.7M 8984(0) pageins, 3189(0) pageouts
PID COMMAND %CPU TIME #TH #PRTS #MREGS RPRVT RSHRD RSIZE VS
339 AOL Instan 52.0% 7:53.74 10 132 173 5.84M 10.4M 11.8M 1
358 top 10.5% 0:01.66 1 14 15 284K 244K 524K 1.
341 TruBlueEnv 5.2% 9:04.51 19 183 234 27.6M 14.2M 39.8M 1.
But as for everyone using different messengers, there should be only AIM. It was first, biggest, and has been free for quite some time. Everyone else has been copying, ar trying to steal from AOL's userbase. Anyone who uses MSN Messenger is a soulless clone. The other ones ore just weak. The multi clients like fire are cool, but I only use AIM.
That's my story and I'm sticking with it.