I'm trying to work out whether or not I'm imagining a newly-implemented feature.
I'm pretty sure that I've just gone back to a tab where I previous had reputation X (on the questions page), and seen it change to reputation X+10 in the background.
This would certainly be a neat feature, using the same sort of ajax approach as the background checks for new answers being posted to questions. However, I'm slightly unsure as to whether I'm just imagining it or not.
Has anyone else seen this? If I'm right, does anyone know how long the feature's been there?