Have you done any Qt development for Maemo? If so, Dave Neary would like your help verifying a bug in the documentation: I'm not set up to even confirm the bug, I'm afraid, so I definitely would appreciate someone doing Qt development on Maemo 5 getting the source code, trying to compile with PR 1.2, confirming the bug, and ideally helping by submitting a patch. Ville Vainio has attached a patch to the issue, but independent verification is always helpful.
Talk user "Blizzard" has released a usable version of his script which allows users to scan for empty frequences which can be used with the FM transmitter: Interestingly, the Silicon Labs Si4713 FM transmitter used in the N900 actually features low-power frequency scanning, but support for it isn't implemented in the drivers available for Maemo 5's current kernel. The script is downloadable from file-sharing site MediaFire. Downloading scripts from such websites should be done with care, although the comparitively simple nature of the script means its functionality can be easily checked.
An article on the Symbian wiki covers coding battery-sensitive applications for both Symbian and Maemo: The goals of this article are to: highlight the key areas of Qt code design where developers can minimise power consumption; give desktop Qt developers an appreciation of the issues to consider when coding for power efficiency. The article does focus on Symbian tools, but the techiniques and prinicples give a good grounding in the problems to all mobile developers and the examples should be applicable on Maemo via either the Qt SDK or Scratchbox.