Enter a keyword when searching through Google and you'll be presented with hundreds of different web pages, many of which have no relevance to the original search. You've then got to make your own quick analysis, from the description of the page, which sites are the most relevant to your search. This can take ages and you'll also end up on various sites that you didn't want to visit. If only Google presented you with screengrab of the web searches which may help make your decision.
GooglePreview 3.4 is a free Firefox add-on that will enable you to see a quick visual preview of the web pages presented, when you enter a Google search. It might give you a better understanding of the pages offered and whether you want to visit. The latest GooglePreview contains support for Firefox 3.
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