BBS outer chain
 

BBS is in addition to the chain link besides effect one of the best ways, especially in some high weight BBS leave the chain. In choosing a BBS, we should pay attention to two points: one is the BBS and the correlation of our web site to high, and the second is the popularity of the BBS to high, the daily post big quantity. Only in this BBS leave the chain, just are more likely to be a search engine that is effective outer chain.