Someone told me that if you are doing enough bookmarking, it will be harmful for your site. Is it true?? plz guide me i am confused.
I can't say I know for certain as I have never seen it first hand or tested this theory. It wouldn't surprise me at all if that was because the person gained too many links too fast, not necessarily the type of the link, the reason they would need so many is because social bookmark links don't do a whole lot. Give me 10 GOOD links over 1,500 bookmarks ANY DAY of the week. The only reason I use social bookmark links is for fast indexing and to get high quality content out in front of masses.
Be Social is its Internet's Next moto. Even the Search engine Giant says "Don't be evil" Make friends and promote what you are doing (if it is good for other).
In principal -- if you are bookmarking your site.. the purpose of 'social' bookmarking is defeated. I haven't seen any problems with my test sites where almost every post was getting bookmarked.