What is Greasemonkey again? Here's the answer....

To put it simply....it blocks (or allows) certain parts of websites....and that's basically all you need to know at this point because the main reason I recommend it  is Facebook with all those ads....yikes....so install it and run it and settle back for breezy web surfin'...and safely....you can download more scripts (which cause the webpages you are viewing to be more functional)  Get  SCRIPTS
Get Greasemonkey HERE for Firefox