Seems my policy of remembering what I like myself finally prevails.
This is Google by the way, so I wouldn't worry about your data being deleted, even if it's a major problem you might just have to deal with it for a few minutes/hours before it's back to normal.
------
Actually, has anyone else had problems with image search recently? I don't think I changed any browser setting but the last couple of days I can't left click on any of the images (I can still middle click for new tab or right click for the context menu)
Edit: Ah figured it out... for some reason Google has tied that feature with setting a cookie, which I disallow on Gimages (though I would have thought the link should still work with a simple left click, but nope)