According to TechCrunch’s roundup of ComScore’s data on annual uniques, Google’s top 3 properties are Web Search, Image Search, and Gmail. I’m a little surprised that Image Search garnered more than twice as many uniques as Gmail in the past year since I find Image Search to be kind of an afterthought. Perhaps the majority of traffic actually comes from the Image Search results that are pulled onto Google’s Web Search front page for some queries rather than from direct visits to the Image…