Occasionally, against all odds, you'll see an interesting or even enjoyable picture on the Internet. But is it worth sharing, or just another Photoshop job that belongs in the digital trash heap? Check in here and find out if that viral photo deserves an enthusiastic "forward" or a pitiless "delete."

Image via Facebook

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Given the relative rarity of Imhotep sightings in the United States, it was easy to disbelieve this picture of Buffalo's recent lake effect snowstorm when it showed up on Reddit Wednesday. However, the above photo is totally real, just one of many documenting the astonishing icy death-cloud that enveloped Western New York this week.

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This widely-circulated photo, on the other hand, is somewhat less than totally real. Endorsed by no less an authority than Stella re-groover Taye Diggs, the picture quickly spread through social media as a striking illustration of the deep shit snow Buffalo is in.

In reality, the photo was first posted back in February by the Facebook page of Nassfeld, an Austrian ski resort.

Image via Facebook

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According to WD-40, this "genuine ad from 1964" is basically none of those things. The company told Gawker they were unable to verify the ad's existence through internal records and gave a number of reasons why they believed the image to be a fake:

First, the paper in the ad appears old and wrinkled, but the type on the ad does not, which indicates the text is probably something that was added to a digital background. Second, we would have likely used WD-40 with a hyphen, which does not appear in the ad. And third, it is highly unlikely that WD-40 Company would have authorized such an ad, even in the 60s when ad standards were less stringent than they are now.

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This improbable retro photo, however, is the real deal. Showing the delivery of an Elliot 405 in 1957, the photo was originally scanned by the Record Office of Norfolk, England before making its way to Reddit last weekend.

According to an April 1957 New Scientist article, the Norwich City Council "anticipat[ed] a savings on staff alone of at least 20 per cent" thanks to the machine.

Image via Facebook

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On Friday, Russia's Channel 1 broadcast this supposed satellite image showing a (presumably Ukranian) fighter jet shooting down Malaysia Airlines Flight 17. In almost no time, however, bloggers showed the picture to be a sloppy fake, sourcing almost every element of the photocollage to Google Images or Russian map sites.

Once the trickery was revealed, social media users began offering their own shocking photos of MH17's final moments, incriminating everyone from Vladimir Putin to Putin's trusty riding eagle.

Image via Twitter