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Rather than debate the pros and cons of clicking (We're guessing that ZOMG! video is never worth turning your PC into a spambot), we recommend bookmarking a URL checker to find out just where that enticing link points before you click through.
We've found five URL expansion services that will give you some peace-of-mind when browsing. Take a look through the gallery for our choices, and let us know in the comments about any other sites you use.