In general, there are seven steps to exchange links:
1. Identify the industries in which your website belongs, such as information, news, product, or online shopping, only websites in the relevant industry can play a good role in your website. You think, rankings are like elections. Friendship links are like voters. They don't vote for you, you can imagine your role, so finding the relevant industry is the first step and the basic step.
2: Looking at rankings, the ranking websites are naturally given a higher weight by Baidu. Of course, this is not an affirmation, but at least it is certain that Baidu is paying more attention to this site recently, at least the ranking is similar to the ranking of the websites you change.
3. Check the snapshot indexing speed and the update degree of the website, the magnitude of the chain, and the weight of the website, the snapshot condition is believed to be the first condition for every seo link to begin to pay attention to. The quality of the website content can be seen in the indexing, and the user experience of the website can be seen, as well as the update frequency of the website, and the website weight.
4. The popularity of keywords reflects the strength of a website. If the keywords you make are hot and the keywords you want to change are cold, however, its ranking is similar to yours, and this is not enough. You should look for keywords that are close to the heat, and then check the ranking level.
5. Looking at p r, why put pr behind it? There are many people who are focusing on pr now, but some people are beginning to abandon the pr conditions, because the pr changes with Baidu do not match the rankings of some websites, the ranking of pr0 is still very good, of course, the gap between pr cannot be too big, in other words, google's algorithm conditions are much more powerful than bd, which can be used as a reference.
6. Check the link. The exported link of a website cannot be too many, because this will share the weight of the website and naturally affect your website. The export link is within 40, and it is best to change the link between 10-20 websites.
7. Quality: it depends on the quality of the links of other websites on the websites with the link you have changed, and the quality of the links you have changed, if some websites cannot be opened and the homepage is downgraded, it is better not to change it. Maybe it is ranked well now, but it is unstable. The downgrading website is tied to the website you want to change, this affects your website. This is all related, but the extent of the impact is not the same.