Just some random nerdy thoughts today:
This guy just brought to my notice that Firefox lacks a "Make available offline" feature like the one in Internet Explorer. (In IE, apart from the current page, you can also specify a link depth you want to download to, à la wget!) I must say, this is a pretty significant feature that Firefox is missing. Of course, if Firefox is missing a feature, you just look for extensions!
Initially, none of the extensions I found could add this functionality to Firefox. Then I found the updated version of Spiderzilla. (Keep in mind that Spiderzilla doesn't seem to be in development and the version I have linked to, has been repackaged from the original by someone on extensionmirror.)
Among other things, Hotmail is beta testing a newer interface. (Ajax and all that!) I just hope that they make it cross browser, and compete using quality and not lock-in.
There seems to be a lot of new web-based RSS aggregators out there (My Yahoo, Google Reader and of course BlogLines) but the one I like the most is Start.com by Microsoft. Why? Apart from a very capable interface, it's the only one you can try and use without having to sign in.