“Send instant messages to cell phones via Firefox. It uses the free service Teleflip and the freeware SMTP mailer Blat. Currently only compatibile [sic] with Windows and service areas of North America.” Works with Firefox 1.0.4.
I haven’t tried this out yet, but if it works like it says it does…wow. I can think of some uses for it, but I’ll save that for another post. (Golf clap: Digg)