I have an HTC Desire. This phone sadly has very limited internal memory although plenty of memory card memory. Since owning it I've become accustomed to moving any apps I download onto the SD card and using the internal memory as little as possible. Unfortunately some applications insist on being installed in the internal memory. Some of these applications (Adobe Acrobat and Google Maps for example) have become larger and larger as more updates have come from Google and I've had to uninstall all updates for them, settling for the basic versions which came with the phone and cannot be uninstalled. (In the two cases listed these versions are far leaner and better anyway).
Unfortunately Google is working against me in my crusade to continue using my phone. A year or so ago they forcibly upgraded the simple Market app (which took up very little space) with the 10Mb "Google Play Store". I had sufficient space for this until they also forcibly installed "Google Play Services" which uses a further 6Mb. This now causes my phone to be unusable every morning (low disk space) when the update happens and every morning I uninstall it again before I go to work.
Does anyone know if it's possible to disable the updates for Google's own market place? The old Market app does still work very well once you've uninstalled Google Play but I can't find a way to make that permanent.