Open browser, go to the messenger part, log in, as simple as that.
First impressions:
- no ICQ groups – that sucks – I used to use it a lot
- aliases of people are retained (‘MG Zas’ for example) – which is a backup for groups (‘group MG -> user Zas’ becomes ‘MG Zas’).
- Cyrillic characters work fine (if it was working with my other client – Pidgin/Gaim)
Concerning the standalone client – Google Talk – I have no idea if it works there – Google have a pretty wierd update policy – they update silently and only some clients – it sucks.

After all – it’s usable