Google Webmasters will identify bad links for you
Are you still stuck on page 200 for your leading industry volume search terms? The reverberations of Google’s algorithmic changes are still being felt by many small businesses.
Are you an ‘unnatural links’ victim? Whether you built the links yourself or not I believe you are a victim…just as Google has proved to be a victim of its own success in organic search. Presuming that you’ve:
1). Removed links but kept some that you believe have some type of unmeasurable value
2). Implemented the disavow tool to blast some bad links
3). Still found yourself in a hole
…then you might find this +Matt Cutts video quite interesting – further support is on the way: