Salesforce.com’s Chatter social computing service is now available to a limited number of private beta participants. Salesforce.com’s first shot across the social computing bow was fired back in November when they announced the service, now that the wraps are coming off we’ll see if Salesforce can compete against the likes of Microsoft, IBM, a plethora of emerging vendors, and even Cisco.

I think Chatter has the potential to be extremely disruptive. Salesforce brings some inherent strengths to the table, it’s arguably the most widely deployed software as a service, via the SaaS delivery model Salesforce can bundle Chatter with the services it’s already providing to end-user customers, in effect going around IT and undercutting more centralized attempts to bring social computing to the enterprise via stand-alone platforms such as Confluence, Jive, and SocialText, or as add-ons to collaboration tools such as SharePoint or the Notes/Domino/Quickr suite. Salesforce also points to the opportunity for its development partners to integrate Chatter into the tens of thousands of Force.Com developers, but to succeed Chatter must evolve beyond a Salesforce-based application and offer the opportunity to integrate into other collaboration applications. It must also overcome concerns related to compliance and security of storing potentially discoverable conversations in the cloud.

Google today announced “Buzz“, their attempt to merge the worlds of social computing with e-mail. Buzz adds social tracking features to your in-box, allowing you to see the social activity of your contacts. So what’s not to like?

I think the biggest issue with Buzz is its reliance on Gmail. Google makes the assumption that your e-mail contacts are your buddies, but that’s not necessarily the case. I’ve got a lot of folks in my in-box who are business or casual acquaintances, or whom are on mailing lists that I’m on, and who aren’t friends I’d want to follow. The people I want to follow are all in my Facebook account, but Google doesn’t yet connect to Facebook. If there’s a “killer app” that will move people from Facebook to Google, I don’t see it.   Buzz may have some use as another social computing channel, but at this point I don’t see it replacing Facebook (or even LinkedIn).

Where Buzz, I think, has the greatest appeal is in creating a social community within companies using Gmail or Google apps as their corporate messaging environment. Buzz just fired a shot across the bow of all the social computing software or service vendors targeting SMBs. If you are already paying for a corporate Gmail service, you just got a whole suite of social tools as well.

There is one other problem, it doesn’t work. At this point I don’t see the “Buzz” link in my Gmail in-box, and from following various twitter comments, neither do many others.

Update: Buzz has a massive privacy flaw