CustomizeGoogle

Google has become many people's de facto entry point to the Internet. If you want to tweak how the search site works, you'll love CustomizeGoogle, possibly the most useful Firefox extension you'll ever see.

For example, if you don't like the ads that appear on the right-hand side or at the top of the page, you can use CustomizeGoogle to make them disappear; do a search, and they're gone. The extension can also add links to other search sites, so you can use other search engines directly from Google. And if you add a History link to each search result, it can find old versions of a Web pages. Click the link, and you'll be sent to the WayBack Machine site, which caches old versions of Web pages.

Worried that Google may invade your privacy? The extension can block cookies from being sent to the Google Analytics service, which web site proprietors use to track visitor behavior on their pages.

There's plenty more here as well, such as the ability to customize Gmail by removing ads. You'll find dozens of ways to change how Google and all its services work.

[Via PC World]