Quality Guidelines For Link Building.
1. Only Incoming (non-reciprocal) links.
2. Links with specified Keywords in the Anchor Text.
Sufficient randomization in the anchor text and associated link description text so as to not have a set pattern of linking.
3. Links from sites that have PR specified links page.
4. Link to your site should not be through a redirect script.
5. No JavaScript links.
6. No framed sites.
7. No flash site links.
8. No robots.txt exclusions.
9. Exclusion in Robots Tag.
10. No paid links.
11. Links from Pre-indexed Pages only.
12. Spread your site link across different domains.
13. No SPAM should be used to solicit links.
14. No links from Link Farms.
15. No FFA networks. (Free For All)
16. Don’t get links from Blogs and that have the Link 17.Attribute, "rel=nofollow".
18. No links from PORN, racially prejudiced sites and other sites containing offensive content.

