Without a lot of the teckie stuff, sometimes the reason is lack of content, lack of unique content, more outbound links than inbound links (and that counts your internal links)
I should have sold my internal
PR 5 poker page to
PR enthusiasts, and laughed. It dropped to 2 then 0.
The bots? yeah, it must have some validity but its not really a factor short term. I would put it down to lack of unique content, more outbound than inbound links or its just not updated yet> either way look at your stats b4 the
PR rating