Hosting company Rackspace is acquiring Y Combinator-backed startup Cloudkick, which offers a full-fledged server management system to businesses.

DailyBooth is updating its iPhone app today, which is likely turbo-charge the service’s user base -- and if it works, you too may be taking a picture of yourself every time you tickle out a few lines and update your status.

 

Salesforce.com has just announced that it is acquiring Heroku, which provides a Ruby application platform-as-a-service, for approximately $212 million in cash.

That’s one hell of an exit for the startup, which was founded in 2007 and has raised only $13 million in funding.

Heroku was initially provided with seed funding through Y Combinator back in 2008.

Congratulations James, Adam and Orion!

We chose some of these startups due to their great features and impressive momentum. We chose some for addressing important consumer and business pain-points in particularly innovative ways. Whether any of these companies are the next Facebook or Google hardly matters. These startups left their mark on 2010, many of them helping to foster some of the most important trends of the year.