Hello fellow developers,
In Håkon Wium Lie's recent analysis of Wikipedia image markup ( http://www.princexml.com/howcome/2009/wikipedia/image/), he makes a good point: we include image captions both below images and again in the images' tooltips. Also, for inline images without explicitly defined tooltips, the image name is used as the tooltip even though it is also shown in the URL when mousing over the image. Neither of these automatic tooltips are really useful, and they slow down page load time on image-heavy pages.
What do you think? Should we keep the redundant tooltips, or start leaving them out?