Pay per click fraud in Yahoo and other search engines is on the rise, and as advertiser you need to take certain steps to protect yourself. Here are some suggestions:
1. Analyze your server logs. If you have access to your server logs, you can use that to check if anything smells fishy from the traffic you get from your PPC campaigns. You need to watch out for the following:
- Repeat clicks from a specific IP address
- Spikes in search frequency at a give time.
- Abnormally high search frequency for an expensive word.
2. Use a pay per click fraud monitoring and detection software. Here are some of them:
- Vericlix (this is free) http://www.vericlix.com/
- WhosClickingWho.com (about $30 a month) http://www.whosclickingwho.com/
- Keyword Max Click Auditor http://www.keywordmax.com/click_auditor….