Social Media Classes In Second Life?

Do you use Social Media to brand your Second Life business? If you do, what have the results been? Positive I hope. If not, can I ask why?
I am preparing to offer some Social Media classes inworld covering many topics including:

* Twitter Strategies
* Facebook Profiles, Fanpages and Events
* YouTube for any business
* Photosharing, Social Bookmarking and commenting
* Blogging/Websites optimization

Do any of these sound like a class/course you would be interested in?

Do You Have A Business In Second Life?

If you answered yes, please feel free to comment with a link to your website or the SLURL and let us know a little about your business.If you do not have a business in Second Life, have you ever? If you are thinking about it what's stopping you?