Slideshare, a service that lets you share presentations on the Web, introduced branded channels for businesses today. Companies can now create custom, branded "microsites" on Slideshare that include presentations, webinars, documents, and information about events. People can become followers of a microsite and make comments.

There is a handful of companies under the business category as of today. For example, Razorfish, the interactive marketing agency, has 21 presentations posted on its SlideShare site, which has 231 followers. The White House has a channel under the non-profit/government category that features more than 1,000 documents, along with translations of Presidential speeches and several presentations. The site has more than 500 followers so far.

The new channel offering comes on the heels of Slideshare's other business-friendly services, including AdShare, which helps you do targeted promotion of content, and LeadShare, which lets you collect information on viewers. So far, the company isn't saying how much the channels will cost.