There appears to be an issue with HTC Droid Incredible, HTC Droid Eris, HTC Evo and maybe other devices that run Sense UI.
BGR reports browser privacy bug, where phone would periodically make a screenshot of the contents of your web browser and never delete it.
Furthermore, deleting browser history or even hard-resetting device will still leave those JPEG files in place.
If you want to get rid of them now, navigate to emmc folder and seek for .bookmark_thumb1, that’s where those files are placed.
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Vygantas is a former web designer whose projects are used by companies such as AMD, NVIDIA and departed Westood Studios. Being passionate about software, Vygantas began his journalism career back in 2007 when he founded FavBrowser.com. Having said that, he is also an adrenaline junkie who enjoys good books, fitness activities and Forex trading.