In general, the Internet is a marijuana-friendly place -- but that doesn't mean every door is open to weed, as pot advocate Mason Tvert learned firsthand.

His publisher wanted to use Facebook to tout a special deal on his book Marijuana Is Safer: So Why Are We Driving People to Drink? only to discover that the social-media giant wouldn't allow ads to support it...

Read the entire story at: http://blogs.westword.com/latestword/2011/06/marijuana_mason_tvert_facebook_ad.php