Originally Posted by SIK

Like someone already said, google doesn't give a flying fuck about porn searchers and porn search is fucked up totally.

Other than BAD sites dominating results, there is another issue - because they can't monetize porn search directly, they stuff results with all kinds of crap, mostly news articles from mainstream sites. Try doing any porn query. I tested with "sex videos" (but you can try any, with +/- 10% more porn results, depending on query itself.

Quick Analysis:

Page 1:
First result, big porn tube - OK
Top stories (snippets) about Sex offenders and pedophiles - ???
Few more big porn tubes - OK
Three results with articles about sex toys and pedophiles from news sites - ???

Page 2:
Exactly 3 results with big porn tubes scattered in other results - OK
2 Twitter results from same "sex video channel" - ???
2 artistic video productions about sex - ???
3 News articles about kiwi mum, denmark and sex tips - ???

Page 3:
First result is a restaurant menu - ???
3 youtube results - ???
webmd article about sexuality - ???
google books one result - ???
tmz videos - ???
3 news articles about perverts being arrested - ???

There is almost no trace of any porn after page 2


All that + there is virtually no more long tail searching for porn. You simply can't give google a detailed 3-4-5 word query, even exact title of video will not be found in most cases.