We've had requests in the past to include boxes on questions that indicate the user's geographic info. This helps in cases where the answer is tailored to their specific climate. Recently, StackExchange rolled out a new feature where if you hover over a user's gravatar, it expands into a pop-up showing the user's info and the text from their "About me" section.
While a lot of us have copied over our profiles from other sites or have some default random text, I think that it would be helpful if we all edited it to include some relevant geographic information in a neat and uniform manner. Here is what mine looks like right now:
At a glance, you can see where I am and what sort of climate I have and if you need more info, the two wiki links should suffice. I think this is a very neat way of displaying info useful for answering questions, yet is hidden away from view when not necessary.
There are certain word limits and paragraph limits to how much can be shown in the pop-up. Also, you'll need at least 1000 rep (which I'm trying to get lowered) for this to activate. While these are being tweaked by the dev team, I fiddled around a bit with different combinations and settled on this for tightly fitting in the box, yet packed with details. The space below my rep & badges is where the website info goes (if you have one) and the space below the last line is where your twitter/Facebook info goes (there used to be fields for it, but not anymore. It's still in testing and most likely, will be back).
Here's the text from my user info which you can copy paste to your profile and make the necessary changes.
Location: [San Diego](http://en.wikipedia.org/wiki/San_Diego) [Hardiness zone](http://en.wikipedia.org/wiki/Hardiness_zone): USDA zone 10 Mean temperature (°F): 58-75, Highs: 80-90, Lows: 48-55 Rainfall: 2mm/month from Jan-Mar, 10mm/year Frost/snow/ice: None
Again, this is completely voluntary and should not be forced upon anyone. However, if there's agreement that this is a good idea, I see no harm in pointing new users/users who don't know about it to this post.
Lastly, this should never replace the relevant info being present in the question. This merely serves as additional helpful info. For reasons pointed out in Robert Cartaino's answer to the question linked earlier, questions should always be self contained. This pop-up helps in cases where a user forgets to add info (will reduce comments requesting for geographic & weather info), or if you quickly want to see their info without leaving the page.