Why webmaster does not like more book mark submission

Question

hello,everybody

I know social book marking site is instant link building sites.Suppose you have a new site you want to more back links for your new site.In this case you can go through this,but i don't have understand why it is not very good for a website.I think maximum of book marking site are maintained no follow tag,because search engine can not able to crawl this link.

Answer 1

If you are submitting same url to more bookmarking sites then it will be considered as spam and google may not crawl your page.. Take it seriously..