The only thing I can think of is that some have not called and talked to the CEO or don't visit IHub. If they did, or for anyone new here, they should review "mediaguy"'s posts on this board.
In my opinion, the relatively steady decline since October might be due to dilution:
http://biz.yahoo.com/e/100813/pntv.ob10-q.html "Due, in part, to our lack of historical earnings, our prior success in attracting additional funding has been limited to transactions in which our equity is used as currency. In light of the availability of this type of financing, and the lack of alternative proposals, our board of directors has determined that the continued use of our equity for these purposes may be necessary if we are to sustain operations. Equity financings of the type we have been required to pursue are dilutive to our stockholders and may adversely impact the market price for our shares. "