Don’t Expect SEO Value From Comment Spamming
About 10 days ago, Google published a post about comment spam on their WebmasterCentral blog. They have warned that they have the means for understanding the link graph & they can determine and tackle comment spam links using algorithmic methods. They can even determine the fine-line spams that some webmasters deploy like instead of blunt spam they will say “great site!” as a comment with a keyword as their name. So in best case, you will receive a little or no SEO value at all for posting meaningless comments in other websites & blogs.
But still I doubt if spammers will stop spamming. These may be hard facts about comment spam, but comment spammers are hard nuts to crack. They perhaps just like to spam 
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Categories: SEO
Comment spamming will bring a bad name for the web site… i hate spammers, every day my plugins are blocking hundreds of spam comments!
I am tempted to write simply ‘great site!’…
However, I too hate spam with a passion, spammers are too stupid to realise very quickly that their tactic is not working – hopefully, this will also leave spam software sellers high and dry, although they will no doubt still try and sell their crap.
There is clever black-hat, and then there are the wanna-be black-hatters who have no real idea about what is really going on – they are the real nuisance…