This week in social media, Facebook users discovered that an algorithmically driven "look back" at the year is pretty accurate -- maybe too depressingly accurate.

Meanwhile, Twitter CEO Dick Costolo got more pressure to step down from the helm of the troubled company, while rumor has it Foursquare and Twitter will partner to add more location features to tweets in 2015. Also, Facebook found out it has to face a privacy lawsuit over messages from two years ago.

It's time for Social Media Saturday!

Facebook

A Year in Review: For Better or Worse

For many, Facebook's automatically, algorithmically generated "Year in Review" feature that popped up at the top of users' news feeds was a great way to browse through their year on the social media platform and reminisce about big events, fun times and important changes in their lives during 2014.

For others, like web designer Eric Meyer who tragically lost his daughter in 2014, it can be a case of "Inadvertent Algorithmic Cruelty," a term he coined for when lines of code -- by their nature -- heartlessly and thoughtlessly bring up painful memories, all surrounded by celebratory digital confetti and balloons.

From Meyer's must-read blog post:

Yes, my year looked like that. True enough. My year looked like the now-absent face of my little girl. It was still unkind to remind me so forcefully.

And I know, of course, that this is not a deliberate assault. This inadvertent algorithmic cruelty is the result of code that works in the overwhelming majority of cases, reminding people of the awesomeness of their years, showing them selfies at a party or whale spouts from sailing boats or the marina outside their vacation house.

But for those of us who lived through the death of loved ones, or spent extended time in the hospital, or were hit by divorce or losing a job or any one of a hundred crises, we might not want another look at this past year.

Meyer, knowing web design, didn't blame the algorithms, of course -- code just isn't sufficiently advanced enough to be empathetic.

But he did object to Facebook's automatic creation and posting of "Year in Review," without a simple way for users to opt-out of seeing it. According to Mashable, Meyer wasn't alone in his criticism, and Facebook later apologized, talking to The Washington Post.

Judge: Facebook Must Face Class Action Privacy Lawsuit

A U.S. District Court Judge decided this week that Facebook must face a class action privacy lawsuit -- filed in 2013 over the alleged scanning of private messages sent between users for targeted advertising -- which the company had been trying to dismiss.

Facebook had argued that the alleged scanning practices were covered by an exemption to federal electronic privacy law allowing scanning in the ordinary course of business, but the judge disagreed that Facebook had produced an argument sufficient to label the practice as business as usual, according to Reuters.

Some claims of the lawsuit, that the practice violated California state law, for example, were dismissed by U.S. District Judge Phyllis Hamilton.

Twitter

CEO Dick Costolo Under the Gun

As Twitter has repeated foundered with investors on Wall Street, calls for CEO Dick Costolo to step down have intensified. According to The New York Post, Costolo didn't get a reprieve from the pressure during the holiday week, as Harvard Business School professor Bill George called for Costolo's resignation on Friday.

"It's time for him to go," said George regarding Twitter's chief executive on CNBC, "You need a new team at the top."

Twitter + Foursquare = Yik Yak Killer?

Meanwhile, rumors spread that Twitter was planning on working with Foursquare in 2015 to kick up Twitter's location-based features, as a response mostly to controversial upstart social media platform Yik Yak, which has gone viral across college campuses in 2014 and just raised an early Snapchat-comparable amount of additional funding last month.

While Twitter and Foursquare have declined to comment specifically on the possible move to Business Insider, job postings for geo-engineers, a recent hire of Foursquare's former geolocation lead, and a recent analyst presentation by Twitter emphasizing the importance of location-specific content all point to the veracity of the rumor.