They said Link posting on forum in comments are not welcome anymore.. and i made some free vbulletin themes and they are very popular on vb.org and lot of peoples installed theme on PR 0 forums and theme was containing link back to my forum in footer "Theme Designed By" i think this can also be problem, than i blocked all 635 linked domains from vBSEO
We are a big link buyer, we need a lot of site links every month. We prefer to buy links from webmaster than to purchase the manual hand made links. If you can provide us this kind of links, please contact us. Thanks! Besides, Our company has a set of regulations,like PR should >0, index should>300, The ip adress can not duplicate with our link database etc....... So, if you can send us the list of website you can supply, it will be better. After checking, we will send you the site we select, and begin the transaction. When you have new site, please let me know, we prefer stable and long-term links. Mail: Skype:dustfallen
To get on the first pages of Bing, Google & Yahoo, you don't need any strong back links, I have done it on three of my websites.
Of course you still need backlinks. However, you need them from sites that are of value and are related to your site. Also, you don't want to use the exact same anchor text for every link.
you need to build quality authority back links with relevant to your niches for visible in search engines.