OmniWeb 5 has an excellent ad blocking mechanism. What it doesn’t have is the ability to easily subscribe to or import some of the blacklists out on the internet, such as those used by the Adblock Plus Firefox add-on.
In order to make up for this deficit (at least partially), I downloaded the latest EasyList filter list and modified it so that it uses proper, OmniWeb-compatible, regular expressions.
The one downside with this list is that there is no way to automatically import the blacklist and whitelist files into OmniWeb. Instead, you have to edit OmniWeb’s preferences file directly to add the entries. Instructions on how to do this are included with the rest of the download.
I have no plans to continue updating this list. It’s current as of March 11, 2008. Consider it a good start for your ad filtering and update it manually as needed. I’ve included instructions on how to make your own custom file if you’re so inclined.