It's my first post to the forum and hope i would be answered. I have read somewhere that one should avoid guest blogging so does the Google says the same. But let me know the free blogging sites like wordpress, bloghi and blogspot. Do you think that posting content and the links on these sites would harm the rankings as i have been posting on these sites from 3 to 4 months?
Secondly do you think that social bookmarking has also caused the penguin penalty?
Third question is do you think that syndication still lives as i have read in more than once that duplicate content posting is among the reasons of the penguin penalties.
I hope i would have some expert opinions and suggestions...