I am tired of a kind of spam in my sites and need some advice.
There are some spam appearing in the form of comments in all of my sites. We use the "captcha" style verification, but comments are bypassing it. It indicates the spam is posted by human and not automated systems.
I implemented a system to block the commenter by Ip Address, but the interesting thing is, each comment is posted from different ip address. They are doing some Ip spoofing.
All the comments are very generic in nature and not really about the article itself. Example:
Wow! great information. This is exactly what I was looking for. You made my day. Keep posting more articles like this.
Each comment is different and unique but are very generic and has nothing specific about the article under which it is posted. There is another interesting point - there will be 2 letters swapped in first few words each comment. Example:
Wow! graet information
I changed the implementation, changed the CAPTCHA system, changed the fields used for commenting etc. No matter what I do, the commenting will adapt to the new system within few days and would restart.
Most interestingly, there is no link to any other sites from the comments. So, the commenter has no advantage in doing this.
Any idea why anyone would do this kind of a spam?
