Google（谷歌）曾明确指出链接到某个页面的外部北京网站建设越多，这个页面的权重和排名就越高，这是Google的PR原则。如果想让自己的网站有更好的排名，就需要有更多的优质导入链接（外部网站）来支持。
Google ( Google ) made it clear that link to a page to the external website more, this page weights and rank is higher, this is Google PR principle. If you want your web site has a better ranking, with respect to need more quality inbound links ( external site ) to support.

在增加更多优质导入链接前，应先了解什么是优质的导入链接？概言之，就是PR、Alexa=你的企业网站、且与你的企业网站行业相关度高的外部网站所导入的链接。提高优质链接的方法有以下几个方面。
In a more high-quality import links before, should first understand what is quality inbound links? In a word, is the PR, Alexa= your corporate website, and your website industry related degree high external sites are import links. Improve the quality of the link method has following several aspects.

一、讨巧的方法：
A method, choose the easy way out:

1. 参与知识问答平台（如百度知道、搜搜问问、天涯问答等）的问题回复，在答案尾部或者参考资料来源处添加目标网站链接。最见效的方法是自问自答，但要注意使用不同的账号来做问和答，同时要记得回答完毕后采纳为最佳答案。建议始终用同一账号来回答，这样可以增加这一账号的积分和等级，有利于实现高通过率。
1 in Q & a platform for knowledge ( such as Baidu know, Search Ask Search, end of the world as ) problem, the answer tail or reference sources added at the target site links. The most effective method is the question and answer, but pay attention to the use of different account to ask and answer questions, at the same time to remember the answer after the adoption of best answers. Recommend always with the same account number to answer, this can increase the number of points and ratings, conducive to the realization of high pass rate.

2. 参与社会化wiki平台（如维基百科，百度百科，互动百科等）词条的编辑，在词条底部扩展阅读部分添加目标网站链接。这招相比于上一招，难度有些大，需要你在编辑的原有词条中修改或增加的内容足够有价值，才能保证“添加目标网站链接”顺理成章，一旦添加成功，将会对你网站的权重提高很多。
2 participation in social wiki platform ( such as Wikipedia, Baidu Encyclopedia, interactive encyclopedia entry editor, etc.) in the further reading section to add entries at the bottom of the target website links. This compared to a difficulty, some large, you need to edit the original entry, modify or increase the content of sufficient value, in order to ensure " add target links " logical, once added to the weight of your website, will improve a lot.

二、常规方法：友情链接交换
In two, the conventional method: links exchange

友情链接交换是获得导入链接最常用的方法之一。对于友情链接的交换，需要注意以下几个方面：
Links exchange is one of the most common methods of inbound links. For the exchange of links, need to pay attention to the following aspects:

1.选择外部连接时，尽量考虑选择匹配度高、价值高的网站进行互联。如果是个做手机的网站，选择与做手机资讯、或手机周边产品（如手机屏、手机零配件等）的网站互链。如果违背此原则而选择了一个做美食的网站，即使对方网站PR、Alexa值很高，对你网站的权重贡献将微乎其微。要做好企业网站SEO的外链建设工作，不在量而在质。
1 choice of external connection, try to consider the choice of matching degree high, high value website internet. If it is a mobile phone website, choice and do mobile phone information, or mobile phone peripheral products ( such as mobile phone screen, mobile phone spare parts ) website link. If the violation of this principle and the choice of a food web site, even if the other site PR, Alexa value was very high, for the weight of your website will contribute very little. Want to do good business website SEO outside catenary construction work, not in quantity and in quality.

找到匹配度高、价值高的目标网站最快捷的方法就是：查询竞争对手的网站。查询竞争对手网站的常用搜索技巧如下：百度用“domain:域名”；Google用“link：域名”；yahoo则直接在sitemap.cn.yahoo.com输入网址即可，yahoo查询的反向链接比较精准，推荐使用。
Find matching degree is high, the high value of the target site the most efficient method is: query the competitor's website. Query competitor sites commonly used search techniques as follows: Baidu "domain: domain name " Google "; link: domain name "; Yahoo is directly on the sitemap.cn.yahoo.com input the URL, Yahoo query in the reverse link is more accurate, recommend the use of.

2.确定网站后，交换前需要仔细分析对方网站是否被搜索引擎惩罚过，如果有被惩罚过的痕迹，请慎重和对方网站交换链接。被惩罚过的网站单独链向你的网站，是没有任何问题的。但如果是你链接了被惩罚的网站，那就有可能被牵连了。
2 in determining the site, before the exchange requires careful analysis of the other whether the site is search engine punishment, if have punished the trace, please carefully and other websites Link exchange. Be punished site individually to link to your website, there is no problem. But if you link to be punished website, then it may be implicated.

3.做完这些事后，开始与对方交换友链。但要定期检查你网站上链接到的友情网站，查看是否出现空链，查看对方是否会偷偷取消了导向你网站的链接。
Finish 3 after this, start with each other to exchange friends of chain. But to regularly check your website link to friendship website, see whether empty chain, view each other will secretly cancelled guide link to your website.
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