Something like Third Voice, but less intrusive (or so I read). It’s PC-only. Even their Web site looks bad on a Mac. Ppphhhhhht. “uTOK is a revolutionary new tool that allows you to read and post Internet Notes on any website you visit. Think of Internet Notes as Sticky Notes attached to websites all over the Internet, for the whole world to see. With uTOK every website becomes an active bulletin board, thriving information by and for its visitors.”