Rand Fishkin lists "Twelve Attributes of Obviously Manipulative Directories."
Some made me laugh
#8 Interlinking with Other Directories - If I can buy entry in your directory, along with three other directories for "one low price," I'd probably be better off burning those twenties for warmth (or, you know, trading them in for $19 Canadian).
#9 Common Popular Links - When I look through a directory's "most recent additions" and see a cosmetic surgeon, an Internet casino games site, a UK mortgage property and a Pennsylvania health insurance provider, I can be relatively assured that any decent, self-respecting search engine probably wants to yank the link value pretty quickly.
When you back off and think about the victims it's not so funny. Naive beginners who plunk down their link and a little cash don't know they're drinking from a poisoned well whose effects may linger longer than the memory of that $19 Canadian.
Edited by AbleReach, 20 September 2007 - 10:47 AM.