A link would be nice ...
Also include why this tool is worth adding to Backtrack (your opinion)
This is an awesome tool that I've fallen in love with since the talk @ DC17. I've used this tool to automate website hacking.
I would love to see this by default in Backtrack.
I think the OP means imacros not imacos.
This is an add on for Firefox. This is easy to install.
Further we try to strike a balance when it comes to firefox addons. We try to add those that would appeal to a wide user base, but also not include to many since they generally only bloat and slow down firefox. For those wishing to have this as a default add on for their copy of backtrack I recommend visiting the wiki and adding it to your iso before burning it, or installing to HDD.