We frequently clean blacklisted websites and submit reconsideration requests to have them de-listed. We have encountered many kinds of blacklist warnings including search engines, anti-virus programs, firewalls and and e-mail spam.
Recently I came across an interesting case where Google was flagging a website due to unwanted software. Via our response platform we were able to get to the bottom of the issue, removing the unwanted malware from the website. In the process we learned a few things and wanted to share them with you as well.