(4) love Shanghai search site: other website domain name, home is no longer the first not to exchange links, because this site is likely to be punished, is down right;
1. Links when we want to study the exchange links to other websites, so we ask the site to certain conditions can be exchanged with our website:
(5) link using nofollow tags or links using JS code is not exchange, because such links cannot deliver value.
Shanghai dragon knows to do Links, but look, most of the Links do not good, there is no real use of the column to improve the weights of the site, I briefly talk about how to do Links system, said: