From Lifehacker:  Bookmarklets: Ditch Your Extensions for Bookmarklets.

This is something I’ve been doing more and more of recently, mainly because I don’t have a separate Firefox extension for everything blog or web 2.0 site that I use.  I’ve also ditched the delicious.com extension in favor of bookmarklets that post to two of my own blogs.

There’s a side benefit to this strategy:  You can switch web browsers and not have to worry about your extensions not being offered in the new browser (i.e., Google Chrome).