Google wave is very good platform for working guys as they can do any thing
there , you can even talk to guys in their languages instantly . (How cool)
i have google wave invitees too , i can invite 7 more guys and gals , if interested
You can talk to them instantly, as long as you've emailed them previously and made plans to both go to Google Wave at the same time...slightly less productive than using most IM clients, which at least give you notifications of incoming chat.