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Full user review
"It's good, but...."
No multiple chat clients, you can link more AIM screen names than AIM will allow (AIM allows 7, Adium allows more)
logs me on and off repeatedly at times; frequently tells me my username has been logging on and off too often-even when I haven't been near my computer, crashes occasionally; often only shows part f my offline group list
Adium is about the only free option for Mac users who want a computer based (as opposed to internet based) multiple program IM client. It has its flaws, and a lot of them, but it's preferable to operating AIM and Yahoo messengers together.
Frankly, I miss trillian and hope that they join the Mac world ASAP