C-box, chat box and board messenging services
I am not particularly interested in all the stuff above, but suspect they are all about the same. Anyway I added one at the bottom of the first left sidebar. But be quick, because that has a limited shelf life as I didn't pay for it. If that is what you are looking for and you want one for yourself, go to
Get a C-box. Alternatively, copy-paste any one of the 3 keywords in the search box above, tick the radio button beside "WEB" and search. Perhaps you will get what you want.