[ Must-have Greasemonkey Scripts 2010 ]

If you don't have greasemonkey for Firefox - start here. Then click below to add these awesome modifications to websites you use every day.

1. Google Search Sidebar for FF3 adds relevant results from Wikipedia, Dictionary.com, Flickr, and Youtube to Google search results page.
2. This script will enhance the look of Craigslist so that it is more pleasing to the eye, and doesn't look like a goddamn startup.
3. Craigslist image preview 2 When browsing craigslist, view a listing's images as thumbnails right below the listing. Images expand on mouse-over. Based on "Craigslist image preview" by Jeffrey Palm. Perfect for those fast porn sessions.
   
4. OS X Style for Google Reader makes it look beautiful!
5. Twitter Script: Nested Replies, Custom Search Tabs, Autocomplete, Pagination, RT button, Media Embed, URL Expansion, Hash Tag Search Links, Social Link.
6. Mailto links to Gmail: Rewrites "mailto:" links to GMail compose links.
7. Google Book Downloader

There are tons more. But these are my favorites.

P.S. Do you email your friends various links as your surf the web? Then use the Gmail This! Bookmarklet to make it even easier.