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Web-based application Pixolu helps you find images by their similarity to each other. Enter a search term and Pixolu searches the image indexes of Google, Yahoo, and Flickr. Once Pixolu returns results, you can further refine them by dragging images to a holding area on the lower right corner of the interface. In my test run, I searched for pumpkins. I specifically wanted pictures of lots of pumpkins gathered together but not pictures of Jack o' Lanterns or pumpkin pie. By dragging and dropping pictures of multiple pumpkins from my initial search into the sidebar and refining the search, Pixolu narrowed down the remaining images into just those of tons of pumpkins clustered together.

Summer's ending, and with it goes a certain sense of taking it easier, relaxing a bit at the office-you know, caching up on all that YouTube browsing you skip when there's real work to be done. The popular video sharing site is a great resource (and source of entertainment) that gets better with the right add-ons, plug-ins, third-party tools, and clever usage. Let's take a look at the best ways to get better video, download clips, and just find the video you're looking for at YouTube, so you can get more from your guilty pleasure.

Reader Delerium explains how to keep an eye on your house while you're away, using just a webcam and the Hangouts feature of Google+.

"Adobe Photoshop is the market leader when it comes to photo retouching, image editing, or even creating new images from scratch. However, for most people's uses, it may just be too many features to wade through, too much money to spend, or too complicated to use. Thankfully, there are plenty of powerful alternatives that also have tons of features. Here's a look at five of the best."