Facebook recently announced that the site now has 150 million mobile users worldwide. Much of this has to do with the rapid growth of app usage, specifically on smartphones.Perhaps not surprisingly, social networking apps are the the fastest growing category of all apps, with download rates increasing by 240% in the last year. Of these, Facebook apps are tend to be the most popular; in fact, Facebook is the number one app across most mobile operating systems. Flowtown took a look at the rise of Facebook mobile, and compiled a number of the most interesting facts and figures in the graphic.

Yesterday I downloaded the Kindle App for my Blackberry Storm.  Which I’m really excited about the idea of carrying less books when I travel.

So far, I’ve downloaded two books:

“The Man Who Was Thursday” by G.K. Chesterton (free download)

“Groundswell” by Charlene Li and Josh Bernoff

What mobile apps are you using that are helping you manage your life better?

Last week, Robert Scoble of building43 stopped by Box HQ for a chat with CEO/Co-founder Aaron Levie and VP of Marketing Jen Grant. They talked about the new content viewing and embedding features we recently introduced, where Box is headed with Cloud Content Management, and how Box’s open platform has brought key integrations with business applications like Salesforce.com and a growing variety of mobile apps to Box customers.

A Thursday update to Seesmic for BlackBerry fills in some big coverage holes missing from Seesmic’s proficient desktop tweeter for Windows and Mac. It may be time for those heavy Twitter users among you to get Seesmic back on your radar, if not on your BlackBerry.

Retweeting is Seesmic’s main addition in the latest release, where the retweet funtionality pops up into the options menu. Retweeting quickly reposts another user’s 140 characters as is. For more creative control, there’s also Quote, which will let you edit a tweet–even adding geolocation, a short URL, and a photo–to the message before sending. Like Ubertwitter, Seesmic for Blackberry now includes a preview of a picture embedded within an opened tweet. Good. Now you can slake your curiosity without having to leave the app or wait for a full-size image to load in the browser. The same goes for links leading to Google maps.

[ht to cnet]