Some good answers here already. I'll contribute by offering generic question titles that don't belong:
- When will {device} be available in {geographic area}?
- Where can I find a website that tells me {some information about Android devices/apps}?
- Is there an app that does {some desired function}?
- Is {OS version} available for {my device}?
- Which is better: {device X} or {device Y}?
- Why does {company} do {whatever the company has done to annoy the asker}?
That's what I have for a start.
Related to my answer on the other question, maybe it's simply "if you can't phrase it as a 'How' question, it probably doesn't belong". "When" and "Why", I'd say, are especially problematic.