Instagram's decision to alter its terms and conditions has angered its users. The new details seemed to suggest the service would sell photos without permission or notification or payment [3]. Instagram explained some of the dense details of the new terms in a post [4] published late this afternoon, which included a clarification that user photos wouldn't fact be for sale.

But that could be too late. Mia Farrow, Kate Walsh, Pink, and a host of other celebs have decided to quit Instagram [5] in response to the new terms and conditions, the Wall Street Journal reports.

No more Instagram

— Kate Walsh (@katewalsh) December 18, 2012 [6]

Hey Instagram, these aren't the terms and conditions we were looking for. #BoycottInstagram [7]

— Darth Vader (@DepressedDarth) December 18, 2012 [8]

Trust me, deleting your Instagram account is satisfying#itsthelittlethings [9]

— mia farrow (@MiaFarrow) December 18, 2012 [10]

I WILL BE QUITTING INSTAGRAM TODAY. WHAT A BUMMER. YOU SHOULD ALL READ THEIR NEW RULES.

— P!nk (@Pink) December 18, 2012 [11]

Sorry I gotta delete you, Instagram. I liked your filters."Instagram Says It Now Has the Right to Sell Your Photos"m.cnet.com/news/instagram… [12]

— Kal Penn (@kalpenn) December 18, 2012 [13]

So i hear IG will start selling photos that posted for their own profit. Is this correct? If so then me and everyone i know will be OUT!!

— LeBron James (@KingJames) December 18, 2012 [14]

Hacker group Anonymous via one of its many Twitter accounts is encouraging a boycott of Instagram, showing its follower ways they can quit, Mashable reports [15].

#BoycottInstagram [7] | Very useful guide! How to download your #instagram [16] photos & delete your account. | bit.ly/WjCAq2 [17]

— Anonymous (@YourAnonNews) December 18, 2012 [18]

Over at Time [19] professional photographers described how the new terms would alter their use of the service.

Peter van Agtmael [20], a photographer with Magnum, wrote [21]:

"I will leave Instagram if they don't change the terms. Beneath the chipper and misleading surface patter on the [service’s] intro page, the terms are deeply exploitative."

"What they have done is signaled the end and failure of what could have been a revolutionary social media platform for visual communication," photographer Benjamin Lowy [22] wrote. "Now, I must take a step back and reassess my place on Instagram."

[Image: Flickr usermarfis75 [23]]