I use the Unofficial Stackoverflow Update script

[http://modos.org/sof/?u=UserNumberHere](http://modos.org/sof/?u=UserNumberHere)

It'll show you which questions have been voted up or down since the last time you viewed the page.

I found out about this page from the question [track-your-reputation](http://stackoverflow.com/questions/61553/track-your-reputation).

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See the *[What 3rd Party Tools Exist for StackOverflow?](http://stackoverflow.com/questions/248296/what-third-party-tools-exist-to-use-with-stackoverflow)* answer to the [Unofficial FAQ](http://stackoverflow.com/questions/18557/how-does-stackoverflow-work-the-unofficial-faq) for more fun stuff..