Pretty self-explanatory what it does:
http://www.spywareguide.com/blockfile.php

Which one to choose:
The Minimal Download is just the blocklist.
The Expert's Package is the blocklist, an uninstaller, and a few links.

To use it:
If you're using the Minimal Download, just double-click blocklist.reg and let it add the entries into your registry.

If you're using the expert's package, unzip blocklist.zip by:

Xp: Right click, choose Extract All, and choose a place to unzip it.

Other Operating systems: Try an unzipper like 7-zip to unzip it.

Double-click blocklist.reg and let it add the registry entries.

To update (Expert's Package only): Download the latest blocklist and unzip it as before. Double-click blocklist_uninstall.reg and let it add the registry entries, and install the new blocklist as before.

The latest update is listed here underneath the Downloads section. Check back weekly.

:wavey: