Firefox addon for tagging or marking parts of a page

[-Matt-]

Does anyone here know of an addon for Firefox that allows a user to tag/mark/highlight text on a webpage so that when bookmarked I can later go back to that page and easily find paragraphs of interest?

I'm having to do a lot of research for one of my poli sci classes and want to mark sections and sentences of online essays to go back to later when writing an analytical paper.

 

[-Matt-]

I spent 20 minutes searching for something like this before creating this post then 5 minutes later found an addon matching my requirements perfectly. i failz

For those interested:
https://addons.mozilla.org/en-US/firefox/addon/4482

 

[Konkorps]

i flailz