The 10 Most Popular Photos on Twitter This Week [PICS]

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Our researchers at real-time photo search engine Skylines helped us find all these photos, and to keep it clean they left out spam advertisements for events, and this week we found it necessary to omit one highly inappropriate image -- sorry, this is a family site. Keep in mind that if you click through to the pics' originating pages, the number counts might be different because Skylines made its determination a couple of days ago.

This week, you'll see a few of the usual suspects, including the list-topping Justin Bieber featured in pictures of himself, one of his pals, and some of the objects he touches. Beyond that, you'll see a few pics that might tug at your heartstrings with their nostalgic appeal. You can find the full results of the Skylines pic survey here.

So, as we consider changing our search algorithm to contain more current events and less pop celebrity pics, take a look at the last 10 most popular photos on Twitter post of the year: