Twitter

As the news broke of a school shooting in Parkland, Fla., on Wednesday, hundreds of Twitter accounts believed to be under Russian sway pivoted.

Many had been tweeting about places like Syria and Ukraine — countries where Russia is seeking to strengthen its influence. Suddenly the accounts shifted to hashtags like #guncontrol, #guncontrolnow and #gunreformnow. Tweets mentioning Nikolas Cruz, the name of the shooting suspect, spiked.

Twitter says it has turned a profit for the first time last quarter, sending its shares surging. As of mid-morning Thursday its shares were up nearly 23 percent.

Since 2010, Library of Congress has been archiving every single public tweet: Yours, ours, the president's.

But today, the institution announced it will no longer archive every one of our status updates, opinion threads, and "big if true"s. As of Jan. 1, the library will only acquire tweets "on a very selective basis."

In an effort to curb a reputation of faulty policy enforcement — and to "make Twitter a safer place" — Twitter says it will enforce a fresh set of guidelines to reduce abusive and violent content, beginning today.

The new rules target hate symbols, abuse and unwanted sexual advancements. One clause effectively prohibits accounts from associating with hate groups:

With a single 8 a.m. tweet, a classic Trumpian feud has erupted between the president of the United States and the junior senator from his home state, a high-profile female Democrat who called his tweet "a sexist smear."

Sen. Kirsten Gillibrand, D-N.Y., was attending a bipartisan Senate prayer meeting Tuesday morning when she got a phone call. President Trump had tweeted about her.

This appears to have been a response to Gillibrand's call on Monday for Trump to resign.

Updated at 9:20 p.m. ET

President Trump on Wednesday morning shared with his millions of Twitter followers incendiary videos from a far-right British anti-Muslim party, drawing criticism from Britain's prime minister and Islamic groups.

Social media companies like Twitter and Facebook have been testifying before Congress over the past few weeks about how their platforms were used by Russian agents to interfere in the 2016 US election.

Updated at 2:25 p.m. ET

Updated Oct. 25 at 1:42 p.m. EDT

Twitter has promised more disclosure about its advertisements as members of Congress put the big social networks under a microscope in investigating Russian interference in U.S. politics.

The San Francisco-based microblogging service said Tuesday that it plans to unveil an "industry-leading transparency center" through which it will "offer everyone visibility into who is advertising on Twitter, details behind those ads" and tools through which users can respond.

Shortly before Election Day last year, some helpful-looking posts began popping up on Twitter: No need to stand in line or even leave home, they said — just vote by text!

The messages, some of which appeared to come from Hillary Clinton's campaign, had versions in Spanish, with gay pride flags and other permutations. They were also 100 percent false.

Where did they come from?

Since the dawn of Twitter, the social network has been defined by its limit: 140 characters. But in a tweet that offered a glimpse of what is to come, co-founder Jack Dorsey announced that the service plans to experiment with doubling that cap.

The hashtag is 10! Yes, the symbol that started out as the lowly "number sign" or "pound" on the telephone keypad and later morphed into something entirely different is 10 years old today. And it has accomplished quite a lot. In fact, it's hard to imagine modern communication without it.

And you might think it was all by design. That the folks running Twitter needed a catchy little tool to help their new platform catch fire, and the hashtag is what they came up with.

But that's not the way it happened.

The former president's message after the violence in Charlottesville, Va., was brief, but it hit the right note for many.

"No one is born hating another person because of the color of his skin or his background or his religion ... ," Barack Obama tweeted, accompanied by a photo of himself, jacket slung over his shoulder, smiling at four young children gathered at a windowsill.

In name and in aim, it's a bill for our political moment.

Ladies and gentlemen, Rep. Mike Quigley of Illinois presents: the Communications Over Various Feeds Electronically for Engagement, or COVFEFE Act.

As Congress has taught us time and again, any legislative priority can be pretzeled into an acronym if you simply toss away the conventions of standard American English.

Updated at 5:20 p.m. ET

Spokespeople at the White House and the State Department say the Trump administration remains committed to cooperation among Arab allies in the Middle East. The reassurance comes after a series of tweets in which President Trump appeared to be siding with Saudi Arabia and other Gulf states in their push to isolate Qatar.

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