To install iMacros just follow the instruction as per this official page http://run.imacros.net/
iMacros is a Firefox plug-in that allow you to write macro script which controls Firefox’s actions.
Example of things you can do with iMacros:
- Tell Firefox to open multiple forms URLs in different tabs, and pre-fill information to all fields on all tabs
- Tell Firefox to auto-submit pre-filled forms then close tabs after submissions are done
Those may sounds useless, but if you script the thing properly, you can bookmark your site to hundreds social bookmarking sites automatically with no effort at all!
