Is it appropriate to ask a question about a web app related to a specific mobile device?
When browsing X on my device Y, I have problem Z, what do I do?
I don't think we can say no to these if we want the site to be successful. One thing is for sure - mobile Internet usage is getting more & more significant.
This is really no different from saying "I'm on a PC using Chrome" vs "I'm on a Mac using Firefox"... why not allow "I'm on Windows Mobile using IE" or "I'm on an iPhone using Safari" or whatever? Otherwise do we rule out netbooks with Google Chrome OS? What about iPads? What about other tablet PCs?
I think we have to accept them on the same basis that we do for all questions - that we're trying to answer a question that revolves mainly around the functionality of the site, not the application used to access that site.