Ask YC: What do you want to know about mobile usage? (An Open Source Survey)

Just received a request from a large (purposely unnamed) client for a POV on mobile strategy. For the project I'm going to conduct a wide-cast survey, largely for anecdotal support. My question to YC/HN is: what do you want to know about mobile phone users? What questions would you like answered, what subjects would you like quotes regarding, etc... I'll be writing up and hosting the survey online in a few days, and submitting it online a bit later. It'll run for a week or so. The answers will be posted online, and I'll even host the data in a raw format (names removed) for anyone to use. If successful, I'll host a few more YC/HN polls on various (and suggested subjects).