For about a year ago you could wait up to 3-6 Month if you have made some changes to your site to get more images listed under "Moderate search", last week I made a test with a website, which have been online for a long time, but no biggie. On the site there where a few bad comments to some images, the site lost a lot of images in Moderate search, went down to 91 from about 500.
Now i removed those comments and waited for only about 7-10 days and all images where back in moderate search, thats a VERY good improvement to the filter, still some images are lost in filter which should be shown, but I think thats ok a Images search algo is almost as if a blind person have to filter the images in good or bad, they cant see the images.
A thing I also like is when a image is removed from a site, its also gone on the search engine sometime after.
We have heard about the testing of a new image search in Malaysia where a full page of the source is not shown only a link, it seems it will not spread around which is a DAMN GOOD THING be cause it would hurt a lot of websites and there owners.
