Matt Cutts, Google's head of search spam, posted a video answer to the question "Can I buy a domain that used to have spam on it and still rank?"
Matt explains that there can be two penalties here, one on the manual side and one on the algorithmic side. If this was a manual penalty, you can fix the spam and submit a reconsideration request. Manual spam also has a time out, where the penalty will auto-expire if the spam is cleaned up. If it was an algorithmic penalty, then you need to wait until the algorithm picks up on the changes.
Plus, if the spam was very aggressive, it would be much [...]
Related Topics: Channel: SEO | Google: SEO | SEO: Spamming