I just installed BetterSearch, a Firefox extension which displays preview images for Google Search results and del.icio.us bookmarks as well as a host of other services. In addition to the thumbnail preview images, there is also the page preview feature which brings up an embedded preview within the results page.
Being a visually oriented person I find that having the thumbnail image helps me remember my own bookmarks more easily (apparently the tags and description aren’t quite enough some days), and having a picture of the page makes discriminating between search results a lot easier.
Originally published June 8, 2005 in the Amy@MEdTech blog.