Here is a way for those of us on limited bandwitdh to save alot of it. in firefox you can turn off image loading by doing this
under Tools, Options, Content:
uncheck the box for "Load images automatically"
You now saved for who knows what amounts of MB's in images.
Do note that some webpages don't work all that well with images turned off, fx my Mobile phone provider has my data limit shown in images. So im not able to see those unless i turn it on again.