Anyone using these noticed drops? Just came across this: http://www.buildmyrank.com/news/its-been-a-great-run Seems all the sites are getting deindexed.
Google has been doing this to a lot of sites like that lately. They're really cracking down now, so I definitely wouldn't be relying on those sites to make your own site/s popular.
IMO, it's just google getting really good at recognising masses of spun content - that coupled with the giant footprints these networks inevitably end up producing
I think its the effect of Google panda update. It is affecting so many sites of recent and it goes to show that relying on those sites isn't a good idea.
WOW, unbelievable, their business destroyed, for many sites, if they get deindexed, it's like a death sentence. but this also shows that google improving their system all the time.