Congrats to Yammer! We're loving it at SmugMug - already paying $$ for the service and worth every penny. http://tinyurl.com/6yh432

Yammer; twitter for corporations with a very good business model. I just loved it. http://www.yammer.com/

Recommending Yammer very cool! http://www.yammer.com/

yammer is a twitter rip off for workgroups - and looks/works so much better. http://www.yammer.com

Thanks to Yammer I no longer have to explain to my co-workers what Twitter does. http://www.yammer.com

http://www.yammer.com is such an unoriginal idea. Then again originality doesn't matter, execution and user experience does.

In fact (and my last point of infatuation with http://yammer.com) is that it allows you to follow hashtags instead of just people.

@jowyang Yes, http://yammer.com is the first Enterprise Twitter worthy of the name. They have a nice iPhone app now too.