One of the best pieces of news related to the recent release of version 3 of Mozilla?s Firefox browser is that most popular extensions now work with it. In this post, I?ll present an extensive guided tour to my favorite, free Firefox extension of all: iMacros. If you spend a lot of time in Firefox, and especially if you perform a lot of repetitive tasks each day, iMacros can save you tons of time and hassle. It sits in your Firefox toolbar, and lets you record tasks?whether they are oft-performed web development tasks, or simple tasks such as opening a series of tabs you use each day.