I found this interesting article the other day that I thought you might like. It talks about Poison words. In the jist it is the introduction to an experiment being done about words that cause search engines to flag your site as a “low trust” site. Since I didn’t get permission to post it (I was too lazy to ask). I will just give you the link so you can check it out for yourself.
I am actually very interested in how this experiment will go. I have always made sure to filter out any words I thought was words Google wouldn’t like, but it would be nice to actually have a list.
Here is my current list:
links (for outbound anchor text)
note: I do realize I put these words as text on my own site. I simply don’t care. Besides maybe I’ll start ranking for Viagra