Robert_Charlton - 12:31 am on Aug 11, 2011 (gmt 0)
Planet13 - I think you've asked a slightly different question in this thread, but with more or less the same answers....
Iframe Links: Do They Pass Page Rank?
I'd look again at what Matt Cutts said in his discussion with Eric Enge [stonetemple.com...] which I mention in that thread....
In my experience, we typically want our bots to be seen on the same pages and basically traveling in the same direction as search engine users.
Additionally, Google is now paying a lot of attention to the user experience, and I suspect that hidden product content and buy buttons, if not now, then before too long, will hurt you more than they will help.
Why not link both to additional related articles and to some related product pages? If searchers didn't come to buy, at least you won't be sending them to the back button... and perhaps also you can also incorporate useful content that's worth reading on your product pages.