Bookmarklets, these are handy little tools that can boost your search/surf habits in your browser. They're free, you don't need to install any software and they work on most browsers like Firefox, IE, Google Chrome, Opera etc for Mac/Windows/Linux.
Each bookmarklet is a tiny javascript program inside a bookmark which will look a bit different from a normal bookmark URL as it is a "javascript:" URL. The worst that can happen is you use the wrong bookmarklet for the wrong browser and you get a javascript error so don't worry too much about frazzling your computer.
Here's one for an example
Instant Translate Bookmarklet - Bmlet.com
If you look down to where it says "Download Bookmarklet" and just drag and drop that link onto your bookmarks bar and a new bookmark will appear (I have a seperate folder for bookmarklets on my bookmarks bar for easy access) saying "Instant Translate". If you go to a website thats in Thai or any other foreign language then click the "Instant Translate" bookmarklet a box should appear. By default it will have the 2 character code for English which is "en", click OK and it will use Google Translate. This works for whole pages and for blocks of highlighted text.
If anyone wants the codes for different languages I'll try and find them for you.
Theres a few sites with bookmarklets to try out like
Bookmarklet Directory - bmlet.com
Bookmarklets - Tool Categories
To get rid of any unwanted ones just delete the bookmark and it should be gone.