I occasionally post answers from my mobile, in the case a WP. Has any thought gone into marking questions and answers with a special symbol to signify they came from the mobile version of the site?
I did a quick search but couldn't find much. If such a feature exists, I'll be the first to delete this question and review my searching skills.
FYI this has been posted from a mobile device.
Update (from a desktop): my argument for such a feature is to set expectations on the possible formatting issues associated with a post. A post may be badly formatted, yet contain all the necessary information. It would then state that the poor quality could be assumed to be based on the limited input on a mobile device.
Were I to come back and flesh out the post on the full version of the site (assuming a laptop etc), then the marker could simply be removed.
As for the signal to noise ratio, this is opinionated. I see lots of noise when I'm prompted to share my posts over social networking sites.