Reduce Used Space on Android

I have an android HTC Desire and am constantly running out of space on it - boo! A funky trick I recently came across, via a friend, was to un-install the Google Maps app. Then go back to the market and install it again. It seems that the Maps app keeps a copy of itself on the device each time an update occurs. I can't be sure about this, but I had a whole load of space free up after the re-install.

Obviously in the first instance, make sure your have used the "Clear Data" feature on all appropriate apps. Some apps store loads of data that you may not really want.

Another funky little app I came across was Phone Space Saver. A simple little app that tells you which apps you can move to the SD card - and free :)