If you had access to the twitter feed (and I did at one point, as our company got the firehose from Twitter), it showed the Lat/Long of where it was posted from IIRC.

I still remember looking at that tweet when the helos went in for OBL, from someone in Abottabad PK, saying something like "helicopters hovering at 2AM... this is a rare occurrence" (or something like that).

You can still opt in today to tag your location in a post, that never changed.