Google will sometimes add a feature to their web sites, only to remove it because they think their users want interfaces to be dumbed down to the point of being useless. Sometimes they keep the features around for people who actually want a decent user experience. Here are some tricks that will help you make Google pages useful.
Image Search By Specific Size
Google removed the ability to search images by a specific size from their interface, but you can still add the following text to your search:
You can search for a specific file type by adding the following text to your search:
Pages In a Specific Web Site
You can search for only those pages in a specific web site by adding the following text to your search: