Talk
General -- Relevant topics not tied to a specific program, OS or device. Post here if you can't find a better place.
(Newbie -- Any questions that seem to be easy to solve, but that a beginner can not solve.)
maemo.org -- Website and community discussion.
Off Topic -- Totally unrelated but still worth discussing. An "other" of sorts.

Software
Applications -- Anything about the programs pre-installed or available to download. See the specialized subsections below.
Multimedia -- Applications strong in audio, video and pictures.
Games -- Playing just for the fun.

OS / Platform
Maemo 5 -- The future release, codenamed Fremantle.
OS2008 -- Basic functionality and tweaks for the N810 and N800. Also related: Maemo 4, Diablo, Chinook.
OS 2006 -- Basic functionality and tweaks for the 770. Also related: Maemo 2 - Gregale - Scirocco- Mistral.
Development -- Discussion and support about official and community suported developer tools.
Alternatives -- Other operating systems powering Maemo compatible devices e.g. Mer, Debian, Android, Ubuntu, Palm (GarnetVM)...

Devices
Nokia N810 -- Hardware-specific discussion about the third generation of Internet Tablets.
Nokia N800 -- Hardware-specific discussion about the second generation of Internet Tablets.
Nokia 770 -- Hardware-specific discussion about the first generation of Internet Tablets.
Accessories -- Any complements you can plug, insert, pair, wrap...
Competitors -- Similar mobile devices shipping with alternative operating systems.
Buy & Sell -- Pre-purchase questions, offers and personal sales.

Old
All -- Archived.