You can use, <a href="http://chat.aka-photo.com/">http://chat.aka-photo.com/.
I just installed it to keep my self connected with the other friends of mine. Does not store the data for long and no need to create a username if you dont want to .. just enter any name in the username and press enter. Ask the other person to join the same room and that’s it.
Oh, BTW, I bought this domain to lauch another <a href="http://eshop.aka-photos.com">e-shop or at <a href="http://shop.aka-photos.com">shop. Aha, do let me know which one looks better.
If you like it, please feel like donating some amount to my paypal id.