It must work, because I'd wager that there are more spam blogs/sites than good blogs/sites. God help you if you try to find legitimate information on health or insurance.
The volume of spam blogs compared to non-spam blogs isn't an indicator of working. The volume is based on two factors:
* Automation at the high-end of spamming
* Creating a wide a net as possible to pull in visitors
Much like the volume of spam emails is there because the conversion rate is so poor, so many emails get filtered. By using volume as a vector, despite the diminishing returns, spammers aim to get a decent return on their investment.
The marginal cost of email or a new spamblog is low (though email is still by far cheaper). That's the basis for them being so many of them. I know the conversion rate for email is miniscule (but multiplying that by millions can generate a decent sum). No idea about the conversion rate of spam blogs.
The source of income isn't adsense, it's affiliate products, and in those areas. Porn and pills are the one that are profitable.
And yes, spam blogs do work, they work well enough that when Google finds a blog farm and drops them out of the index, spammers take some time to figure out how they got spotted, adjust their approach or make a suitable correction, and start again. The methods of creating spam sites and blogs differ over time, but the general approach is still a core spam technique.
* Automation at the high-end of spamming * Creating a wide a net as possible to pull in visitors
Much like the volume of spam emails is there because the conversion rate is so poor, so many emails get filtered. By using volume as a vector, despite the diminishing returns, spammers aim to get a decent return on their investment.
The marginal cost of email or a new spamblog is low (though email is still by far cheaper). That's the basis for them being so many of them. I know the conversion rate for email is miniscule (but multiplying that by millions can generate a decent sum). No idea about the conversion rate of spam blogs.
The source of income isn't adsense, it's affiliate products, and in those areas. Porn and pills are the one that are profitable.
And yes, spam blogs do work, they work well enough that when Google finds a blog farm and drops them out of the index, spammers take some time to figure out how they got spotted, adjust their approach or make a suitable correction, and start again. The methods of creating spam sites and blogs differ over time, but the general approach is still a core spam technique.