It’s important to look for quality links to your website. A small number of links from quality sites will bring you much more benefit than thousands of links from poor quality sites. But how do you judge what a quality site is and the value of a link from it? Different link builders will have different priorities.
My Criteria break down into three groups as:* The site itself
* The site's presence on the web
* The site's policies
The site itself:
1. Is the site relevant?
2. Is the content well written?
3. Has the content been updated recently?
4. Does the site link out to many other sites?
5. Are there real people on the site?
The site's presence on the web:
6. Has the site got good inbound links?
7. Does the site score well on Google PageRank, Alexa, Compete, etc?
8. Is the site well-established?
9. Does the site perform well on keyword searches?
Their policies:
10. Are they easy to contact?
11. Do they publish resources or reviews?
12. Do they invite articles or guest posts?
13. Do they interview people for opinion or case studies?
Sources : wordtracker