Just two weeks after Ars featured the work of a man who spends his free time late at night working on a browser extension that adds a slew of new features to Facebook, the famed social network abruptly trashed his extension’s Facebook pages.

On his blog, Matt Kruse, the creator of Social Fixer, wrote on Thursday:

I’ve spent 4 years and countless hours building up a community around my software: my Page had 338,050 Likes, my Support Group had 13,360 members, and my Interest List had 1.47 Million followers. But all of that work was wiped out in an instant when Facebook decided to shut it down without notice.

Kruse clicked Facebook's "appeal" button to try to reverse the decision to pull his page, but by September 11, it was completely removed.

Facebook did not respond to Ars’ request for comment.

“There was no warning, no advance notice, they didn’t say you’re doing something wrong, no ‘Please fix it,' nothing like that,’” Kruse told Ars. “I’ve gone to the feedback forum and tried other things and haven’t heard anything else from them. It doesn't affect my ability to develop and distribute it. I use Facebook as a primary mechanism to communicate with everybody. All of my users are on Facebook so it make sense to go where my users are.”

As we reported late last month:

Social Fixer uses Javacript to modify Facebook’s interface. It gives you dozens of options for customizing how you see Facebook: you can separate updates into tabs, enable mouse-over image previews, change the layout, filter posts from your friends, give everything a theme, and even hide the bits you find disagreeable. It’s a huge amount of work to keep going, but although Kruse has a tiny Paypal donations button on the bottom of his website to cover his expenses, he says he hasn’t made any efforts to profit from it, despite being contacted several times by people who sniffed money to be made.

The Javascript engineer has even been offered a job at Facebook and Google—but Kruse declined both offers.

So what will this mean for the future of Social Fixer? Not much in the immediate term, apparently.

“It makes the project a little more cumbersome to maintain,” Kruse said. "I don’t know. I admire what Facebook does and I use their system and I depend on them existing for this application to run. I don't have negative feelings towards Facebook but ... the way that they handle these things. It’s not communicated well and I don't know if there was a specific post or something that I can do to change to fix it.”

“I guess I don’t understand the motivation," Kruse continued. "I’m certainly not hacking their site. I’m not doing anything that’s considered spam or against their [Terms of Service]. I don't see why they see me as a negative and I wish I could get somebody to say what prompted the actual decision.”