Seesmic, a 3rd party developer of twitter apps for mobile and PC, has issued an upgrade for the Blackberry. Version 1.3 is a pretty substantial upgrade. Version 1.3 will now supports posting messages on up to 10 twitter accounts instead of just one default account. Seesmic for BlackBerry v 1.3 also allows support for Ping.fm, a service that pings your status messages to dozens social networks. Also added to this upgrade is TweetPhoto service in addition to yFrog and Twitpic.
This appears to be a pretty big upgrade. Check it out. Point your blackberry browser to m.seesmic.com