So I use Gizmo5 in conjunction with my Google Voice account for VoIP (some of the time). A few versions of the software ago, I was prompted to give the client my login creds for AOL and MSN instant messaging accounts, as a means of importing contact info. At the time, I believe I did this in an effort to discover if anyone else I knew was also on this service (they weren’t).
I struggled (mightily at times) to figure out how to TURN OFF the association with those accounts. I Googled the F out of the topic, and came up empty. Finally, I surrendered, and sent a request for tech support.
Navid emailed me back in less than five minutes saying that he turned that feature off.
I don’t know WHY there is no end-user toggle for linking in to those other services, but at least it’s off now.
PS – Welcome, ye weary Googler; perhaps this helped solve your problem.