The Golden Rule: Build a brand, NOT links!
In this video Matt Cutts (Former head of Google’s Webspam team) explains why Google does not like most Web Directories.
Video Date: Aug 8, 2011
Harmful Links – Scan and check your website for irrelevant or inappropriate links. Those that come from adult sites or malware infected sites can have a negative effect on your search ranking.
Here are a few tools that you can use to scan your site for bad neighborhood links, IP addresses and domains.