This week, Tumblr began reaching out to entertainment marketers, Facebook made everyone cringe by making search history available for perusal, and Reddit is trying to become the future of reporting by adding a live reporting function. All that, and the world religious figure that just joined Instagram: it's time for Social Media Saturday!

Facebook

Facebook didn't make headlines like the week before, when it acquired WhatsApp for a ridiculous $19 billion sum, but frequent Facebookers will be interested in the minor tweak programmers just made to their accounts.

It turns out that Facebook has been collecting and saving your search history. That shouldn't be too much of a surprise, since Facebook famously wants to know everything about its users, but Facebook made search histories browse-able this week for users.

The feature, as Buzzfeed made clear, is sure to remind lots of users that they too can be creepy and stalkerish, as well as insanely boring, but good news: it's private to each user, and you can delete it.

Tumblr

In the social media world, Tumbr has been relatively quiet -- and struggling grow and make Yahoo some cash. That's why the scrollable social media platform recently appointed a "director of media," hoping to cash in on partnerships with entertainment marketers with deep pockets, according to Mashable.

Tumblr has some celebrity cred, with the likes of Beyoncé and Lady Gaga actively using their accounts, so Yahoo is hoping that reaching out to help companies seeking marketing for movies and other high-profile entertainment on the platform will give Tumblr the fiscal pick-me-up it needs.

Reddit

Several social media platforms, like Facebook and Twitter, are seeking to become the way people get their news online, and Reddit is no different. Besides already being the top source for new memes, internet trends, and "ask me anything" (AMA) community interview events with big names, including the president, though, Reddit wants to help its community become a better place for breaking news.

So Reddit is introducing "Liveupdate." "Liveupdate is a new type of post on reddit," said the site's announcement. "The 'reporters' for a stream can post updates and anyone watching gets sent those updates in real time. Unlike with self-post or comment based live updates, there's no limit to how many updates can be posted during the course of an event. Liveupdate streams exist outside of subreddits and are designed to be submitted like any other link to whatever (multiple) subreddits are relevant to the stream."

Right now only Reddit employees can create streams and add reporters, and they're trying out the feature on two major stories: Twitch Plays Pokemon and the ongoing Ukrainian conflict. Reddit hopes to see the system fleshed out in the future with embedding media sources, pictures, Reddit comments, and video all in the live updates. Hopefully the Reddit community itself can do a better job with this tool than they did during the Boston bombing, where Redditors infamously led themselves, and news-hungry reporters, on a wild goose chase for several suspects that turned out to be false leads.

Instagram Gets a Unique New User 

Finally, while the Pope may be on Twitter, this week the Dalai Lama kicked up the "world-religious leader on social media" contest by joining Instagram. In his first post, he put up several pictures, including some of him and Larry King and President Obama. You can check his photostream out here. (He's also been on Twitter since 2010.)