Our third round of MobileBeat 2011 speakers includes Rich Miner, Tim Schaaff and more!

Preparations for our fourth annual MobileBeat conference are speeding along. Today, we’re announcing our thirdround of speakers for the event: Rich Miner, partner at Google Ventures; Tim Schaaff, president of Sony Network Entertainment; Laura Chambers, senior director of PayPal Mobile; Omar Green, director of strategic mobile initiatives at Intuit; and Humphrey Chen, executive director of new technologies development at Verizon Wireless. You can find all of our current speakers here.

RIM exec begs CEOs to shape up, but RIM doesn’t seem to care

In a passionate open letter this morning, a high-level Research in Motion executive offered up some suggestions on how co-CEOs Jim Balsillie and Mike Lazaridis could reshape the company and avoid certain doom. But instead of assuring the executive that things will get better (or even responding to his actual points), all RIM had to offer up in response was a hilariously defensive blog post.

Nokia continues trimming the fat: messaging biz goes to Synchronica

For a mere $25 million in cash, mobile messaging service provider Synchronica has conditionally agreed to acquire Nokia’s email and instant messaging services. This is a bargain deal, because it means Synchronica will acquire six million users across ten North American carriers, including giants AT&T, Verizon, T-Mobile and Sprint. Synchronica’s market will now extend to approximately 1.8 billion end-users worldwide.