According to its founder, Mark Zuckerberg, Facebook grew by 3% every week. If you have not used up yet, I highly recommend to try it.
What can we do on Facebook from our mobile devices? Basically there are three things, namely:
Mobile Web. Browse for a web site from http://m.facebook.com.
Facebook Mobile
Mobile Upload. Upload notes and drawings by sending a multimedia message to notes@facebook.com or photos@facebook.com. Most S60 devices can send multimedia messages to email addresses.
Up Multimedia Message
Mobile Text. Update your status by sending a text message to FBOOK (32 665). You can also do many other things by sending a text message, for example, poke your friends and write to your friend's wall. To update your status simply send a text message starting with "@" (see picture below).
Up for Text Messages
Note that before using the service text message, you must register your phone number. Unfortunately, as of this writing the post, only U.S. and Canadian numbers are supported.