FLOG - Fake Blog, intended to manipulate users into thinking a subject is being discussed by disinterested parties when in fact the parties have strong financial or other interest and the blog subject was not incidental, but calculated to "advertise" the product.
http://en.wikipedia.org/wiki/Fake_blog
http://money.cnn.com/2006/10/20/news/companies/walmart_blogs/index.htm


Astroturfing - faking a "grass roots" movement on the net.
http://en.wikipedia.org/wiki/Astroturfing

Agnotology (I *think* I mentioned this one already)
The "cultural creation of ignorance," an attempt to make scientific conclusions seem much more tentative and questionable than they actually are.
http://en.wikipedia.org/wiki/Agnotology