This week in social media, Twitter effectively fired its data-selling partners while Snapchat got as Coachella-specific as possible. It's time for Social Media Sunday!

Facebook:

Testing Trending News in News Feed

If you ever wondered if Facebook, despite its billion-plus userbase and rapidly expanding social media empire, was still jealous of Twitter, here's your confirmation: Facebook has been testing a new section of its News Feed called "Trending News," according to a report from AdWeek.

The new experimental section has content sections devoted to business, politics, science and technology, and sports and entertainment, as an addition to the current 10 trending topic content categories. The experiment seemingly seeks to expand Facebook's current events reach beyond its initial "Trending Topics" web feature, launched early last year and eventually ported to mobile.

The addition of new categories could help grab the attention of Facebookers that still haven't taken to the social media giant's attempt to usurp Twitter's throne as the king of social, up-to-the-minute breaking news. But as it's still in experimental mode, don't expect any specific changes to be set in stone yet.

Twitter:

Going It Alone on Data Sales

According to Re/Code, Twitter will soon cut off access to its data for independent partners like DataSift that resell the social networks' data assets to marketing and advertising companies. Instead, Twitter plans to take on all data-selling aspects itself, after buying erstwhile data-selling partner Gnip a year ago.

"After acquiring Gnip in May of 2014, we decided to bring all data licensing activity in-house in order to better serve our customers and partners," a Twitter spokesperson told the Silicon Valley news site. The biggest blow will be to DataSift, a major partner that has worked with Twitter since 2011, but which will lose access to Twitter's "firehose" of data come August 13.

Mystery Jump in Share Price Solved

Earlier this week, Twitter suddenly started performing strongly on Wall Street.  Since that's never been typical of the company since its IPO, everyone knew something was up -- and the mystery of Twitter's up-trending stock price began to take shape.

It turns out there was a rumor going around that Google was steps away from snapping up Twitter, a rumor that The Guardian sourced to Briefing.com and which, for all intents and purposes, doesn't appear to be the case. At least not now.

Of course, there are some good reasons Google could use Twitter and vice versa, especially the facts that social media is a threat to search in general, Twitter's preternatural talent for breaking news is a threat to Google News, and Google has repeatedly shown that it's terrible at building its own successful social media networks. But most experts on Wall Street and in Silicon Valley see a Twitter buyout, especially at this late stage of the game, as something of an improbability, to say the least.

Snapchat:

Snapping Up Cochella with Custom Geofilters

Snapchat launched its "Our Story" feature to take advantage of mass events like music festivals, and it's going further at this year's Coachella with custom, live-updated micro-geofilters.

Normally, a geofilter will take your location and customize content to your metropolitan area, town, or neighborhood. At Coachella, Snapchat is narrowing down its location services to specific stages, and updating them as each band takes the mic. According to TechCrunch, to activate the micro-filters, just snap a video or photo and then swipe left or right to preview the filters.

Of course, Snapchat is also running its "Our Story" feature at Coachella, a collaborative snap-sharing mode that it debuted at the Electric Daisy Carnival last year.