Filter Fakers finds Instagram users who have misused the popular #nofilter hashtag.

If you thought Instagram was an unregulated hashtagging free-for-all, think again. There is now a blog devoted to calling out Insta-fakers who misuse the popular #nofilter hashtag.

Webstagram will let you peek at a photo's Instagram filter. This photo, though tagged #nofilter, is actually using the Walden filter.

Tumblr-hosted Filter Fakers looks at Instagram photos that claim to be unfiltered, denoted by the #nofilter hashtag in the caption, and checks to see if users are telling the truth. Lying Instagrammers get spotted via the blog's automated filter detector and publicly shamed on the homepage.

If you want to call out fraudulent friends, you can submit suspicious photos for Filter Fakers to check out. Or, if you want to check out filter usage without subjecting your loved ones to the wrath of bloggers, you can always find out what filters were used via Webstagram — just look in the upper right corner for filter callouts. 

If overuse of digital filters really fires your fury there's also an app to help you strip images of their photo filters: Normalize for iOS analyzes a photo's histogram and then lets you adjust color and luminance levels back to a more accurate state. Maybe Insta-fakers looking for a little penance could use it to re-upload a more honest version of their image.

Does the emergence of the Filter Fakers blog bring to light the need for an Insta-police and maybe even an Insta-rule book?

Among the questions that we would like answered by the Insta-Supreme Court: "where is the line drawn between a #throwback and #latergram?" and "can it still be called a #selfie if someone else takes the photo?"

After the success of Filter Fakers, we are looking forward to the inevitable emergence of other vigilante blogs — maybe "#Instagood or just #instaOK?" to call out super lame photos tagged with #instagood, and how about "Are you gunna eat that?" for #food-tagged photos that look far from edible.

The vast majority of the photos on Filter Fakers are of the pre-teen selfie variety, but there are a few genuinely great compositions that have had the blog call their Insta-bluff. Let's take a look at some of our favorite Instagram photos that Filter Fakers caught red handed.

According to Filter Fakers, the Rise filter "gives your photos a nice glow and warmth by adding yellow tones." The effects of this filter can be seen in the sky's color.
C'mon, guys. My smartphone just automatically adds a fake-film border, OK?
If the sky ever looks like this without a filter, you should probably hide out in your basement for a bit while the nuclear holocaust/zombie apocalypse blows over.
The Hudson filter brings out blue tones of photos and adds a slight vignette—two characteristics that can be seen in this image.
The colors of this delicate composition were enhanced with the Amaro filter.