While a good ideal, the Odigo client has only had mixed sucess in maintaining interoperability with AIM and Yahoo! Messenger. This is probably due to AOL's stubbornness in not allowing outside companies access to their internal IM network, despite their public release of the IM Protocol. This lead to a back-and-forth hacking effort from both companies. As soon as a new block was in place, Odigo would come up with a patch. In turn, AOL continues to engineer new blocks to outsiders. Honestly, though, should we expect anything more from AOL, the company that sells you ads? This has been leading up to a federal court case, with the open standards effort being lead by Tribal.com, the makers of a similar interoperability client called PowWow.