__________________ Dan Morley Alpharooms.com
daniel at alpharooms dot com - Hotels, Flights, Airport Transfers, Care Hire + More! sign up My Blog | Cheap Holidays
Seems to be hapening for pretty much any merchant that you can think of that has a programme on Aff Win. Seems to be for a multitude of affiliates though.
A link is only a link, after all. It all depends on how far passed the ? the search engines index. The solution is for all affiliate links to contain rel="nofollow" and then this will stop happening. May kill the affiliate networks' PR though, although a link to a page that does not circulate PR is of no use to anyone.
Text links will hit product and supplier names and help to push them up the rankings.
I have had a lot of my own affiliate links appear like this for some top keywords also, but have never had any sales from it so I would agree that the end user is not keen