Now blogging at diego's weblog. See you over there!

comment spam filtering - it's all about the IPs

Sam describes his new comment spam filtering system. Quote:

Then it struck me: from an ip address I have never seen before. Light bulb.

Hit and run. Strangers. People who never have been here before. These people are unlikely to be seen again.

And if they don't come back, it is not possible to have a two way conversation, is it?

So I set to work. I wrote a script to scan my Apache logs for everybody who has ever visited my weblog within the last week. Bots, aggregators, and an occasional carbon based life form, I make no distinction.

Then I add in everybody who has left a comment in the last ninety days. And not just ip addresses, but also urls.

All these people are welcome to comment freely.

Very, very cool idea! Use the logs to establish an implicit community effect, a kind of automatic self-updating whitelist. It leaves me thinking "and where else can this be applied?". Mmm...

Categories: technology
Posted by diego on January 21 2004 at 11:43 PM

Copyright © Diego Doval 2002-2011.
Powered by
Movable Type 4.37