First up will be a review I just wrote about Ringio, a pretty interesting company I briefed with the other day. I've been coming across a lot of cloud-based communications services recently, and this one is a great example of bringing a valuable application to SMBs that they really cannot get otherwise. Ringio's application is best thought of as intelligent Caller ID and CRM with some desktop collaboration.
These things are always best understood with a demo, but at least my writeup will serve as a starting point for you to learn more. It's running now on Focus.com, and you can read it here.