Obama to Keep His BlackBerry? Our new president recently said he believes he'll be able to , despite the huge legal and security concerns of a president freely communicating electronically. "So I make sure to think before I press 'send,'" Obama said. Also, read about , including Twitter.

Contributing Editor James A. Martin offers tools, tips, and product recommendations to help you make the most of computing on the go. Martin is also author of the . to have the Mobile Computing Newsletter e-mailed to you each week.

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Is there a particularly cool mobile computing product or service I've missed? Got a spare story idea in your back pocket? . However, I regret that I'm unable to respond to tech-support questions, due to the volume of e-mail I receive.