This Is What Happens When You Repost an Instagram Photo 90 Times is actually a lovely little demonstration of how JPEG artifacts, edge detection, automatic sharpening, and whatever else Instagram does by default to photos stacks up to quickly make an image decay and deteriorate via processing. The video demonstrates the effects in a nice quick time-lapse way as well.
Julia Solis, who brought us Dark Passage (previously), is still exploring derelict sites, both subterranean and in urban decay. Her most recent project is Abandoned Theaters, a look at grand old movie palaces, school auditoriums, and theaters that have become, shall we say, retired. Julia still keeps a photoblog that she calls Dark Passage Travelogue, and partnering with Suzy Poling, she chronicles the decrepitude of hospitals long abandoned in Fantastic Degradation.