According to the Facebook blog usage of Facebook mobile products has grown from 5 million to 15 million
active users since the beginning of the year.
Types of Facebook mobile interaction are:
Facebook mobile site, m.facebook.com, works on nearly any mobile browser in the world
Extended mobile site, x.facebook.com,
is for advanced mobile devices.
Facebook SMS
allows you to receive notifications or update your status with text
messages,
Device specific Facebook for Palm,
Blackberry and iPhone.
When Facebook added ad the ability to comment on your friends' status updates to the Facebook mobile site, they didn't expect that we would receive nearly a million status comments in the first 24 hours.