A place for my programming projects and the occasional blog about technology related matters.
MultiSearch
Source code - addons.mozilla.org page - Version history
This was done as a request for someone on the Mozillazine forums. It’s in the sandbox at AMO so you’ll need to be a registered user to view it there.
The extension splits up search terms with a delimiter and open results in multiple tabs. For instance, you could do a search from the search bar for ‘foo,bar,baz’ and then it would open three new tabs, one searching for ‘foo’, one for ‘bar’ and one for ‘baz’. The default delimiter is a , but can be changed through about:config, the key is extensions.multisearch.delimiter.
Works with: 
Firefox: 2.0b1 – 2.0.0.*
Latest version: 1.1
Comment
Multisearch is one of the things that makes the Firefox not just a browser but an experience to enjoy.
As the coder of the Extension said, and as it’s name implies, it is a multi search extension.
You Select the search engine you want to search, type or paste the things you want to search about separated with the delimiter (, by default) in the search box, and VOLA, each term opens in a separate tab.
Imagine the list you had with all those things you wanted to buy from amazon, or the list of Movies on your hard disk that needs subtitles, or the list of Words you want to search for meaning to on a Dictionary, just copy the list and paste it in search box and browse the tabs to find what you want for.
This extension is one of a kind, I’ve searched a lot everywhere and didn’t find any extension doing this trick.
Thank you einare.