As it nears its tenth birthday, Twitter is a mess.

The company has struggled to attract new tweeters to join its free-wheeling service, and its stock has spiraled to an all-time low this year. Despite Twitter’s efforts, many users continue to face abuse and harassment, and terrorists have disseminated propaganda on the service. In a somewhat self-conscious move, the company rolled out a set of new features this week ahead of its quarterly earnings report , including a new Trust & Safety Council as well as changes to how the Twitter feed works.

In that report today, the company revealed that it drew $2.2 billion in revenue last year, up 58 percent. Even so, it lost 2 million users in the fourth quarter, and users are what Wall Street values most as the strongest signal of the company’s health.

The company also outlined its goals for 2016, including fixing broken and confusing parts of the service; continuing to grow its live streaming video offerings with Periscope; helping celebrities and brands gain a greater presence; and investing in making Twitter safer.

But ultimately to fix Twitter, it seems vitally important to understand Twitter. We decided to take a closer look at how Twitter’s top executives use the service to get a sense of how well they seem to grok the platform whose future they’re charged with securing.

The Ultimate Twitter Executive Scorecard

Jack Dorsey (@jack)

Bio: “#withMalala!”
Device: iPhone
Verified: Duh.
Frequency: Like a boss (literally) — he tweets dozens of things each day. Since joining in March 2006, he’s tweeted 18,800 times and liked 10,700 tweets.
Style: @jack tends to retweet-with-a-comment news and updates about Twitter as a company. He’ll also partake in the occasional tweetstorm to respond to our collective complaints. Otherwise, @jack loves a RT—whether it’s loosely related to how great Twitter is (or Periscope or Square, where he’s also CEO), or about something he seems passionate about (go @warriors!). And, yes, he gets a lot of hate.
Grade: B+

Adam Bain (@adambain)

Bio: “Twitter COO, dad of 2 under 7, insomniac. @warriors fan. Also: Batik fan (it’s an Indonesia thing, you wouldn’t understand).”
Device: iPhone On the Web
Verified: Nope!
Frequency: Superuser — like @jack, he tweets a lot, including more than 50 tweets just yesterday. Since joining in March 2008, he’s tweeted 9,428 times.
Style: @adambain’s tweets feature a whole lot of Twitter, but he likes to be in the mix of Twitter conversations too, especially when it comes to advertising and e-commerce, part of his domains as COO. @adambain will often respond to tweeters (and reporters, like me) even if they didn’t directly @-reply him. He loves a good retweet-with-a-comment.
Grade: A-

Anthony Noto (@anthonynoto)

Bio: “Twitter CFO”
Device: iPhone
Verified: Nope!
Frequency: Light — lately, he’s tweeted a few times each day but only has 1,119 tweets since joining in April 2009.
Style: @anthonynoto loves to shares celebrations and good news. He tweets out Moments, things to watch on Periscope, and photos from his life (his pup is cute). He doesn’t respond to a lot of tweeters, but as CFO doesn’t seem to get as many tweets directed towards him as @jack.
Grade: C-

Adam Messinger (@adam_messinger)

Bio: “CTO @twitter. Director @girlswhocode and @newrelic.”
Device: iPhone
Verified: Nope!
Frequency: Average — he’s tweeted 2,880 times since joining in March 2007, but he’s liked 10,500 tweets. It’s okay, Adam, we lurk on Twitter, too.
Style: @adam_messinger doesn’t tweet all that much about work, unlike his executive colleagues. He retweets a whole lot, but also responds to things he seems interested in. And, yeah, he uses Twitter to congratulate new colleagues who join Twitter’s revolving flock.
Grade: B

Vijaya Gadde (@vijaya)

General Counsel
Bio: “General Counsel at Twitter. Reading, cooking and watching KU basketball. Investor with #Angels. Comments here are my own…”
Device: iPhone
Verified: Nope!
Frequency: Light — since joining in April 2009, @vijaya has sent out 1,737 tweets and liked 6,909.
Style: Short and sweet. @vijaya tweets when major sports events are going on (like, well, everyone) and also shares updates about the company. She seems to respond more than she actually tweets—and loves punctuation. People tweet to her about Twitter’s abuse policies and when service is blocked in a country.
Grade: B

Leslie Berland (@leslieberland)

Bio:“Huge @Twitter love, CMO. @americanexpress family member for life. Favorite title: Mama. Never, ever a dull moment. #WWED”
Device: iPhone & On the Web
Verified: Nope!
Frequency: Light — since January 2011, @leslieberland has tweeted 1,895 times. She’s also liked just 309 tweets.
Style: As a new member of the Twitter team, it’s hard to judge @leslieberland too harshly. In the past few weeks, she’s retweeted-with-a-comment news, retweeted Twitter specific updates and promotions, and shared things that interest her. She actively replies to some of those who tweet at her.
Grade: B-

Robert Kaiden (@robert_kaiden)

Bio: “Chief Accounting Officer at Twitter”
Device: iPhone
Verified: Nope!
Frequency: n00b — He’s tweeted 27 times total and only liked 22 tweets.
Style: @robert_kaiden has tweeted a few things about his life with lots of photos, but he’s basically a non-user. He’s only ever replied to a handful of tweets.
Grade: F

Brian “Skip” Schipper (@SkipSchipper)

VP, Human Resources
Bio: “HR geek. Art, architecture & design aficionado. Automobile, motorcycle and boating enthusiast. Accomplished bourbonist, proficient pianist.”
Device: iPhone and On The Web
Verified: Nope!
Frequency: n00b – He’s tweeted 32 times since joining in 2014 and only liked 50 tweets.
Style: He likes to tweet photos from his life as well as congratulations to new hires, which is no surprise as he’s head of HR. He rarely replies to anyone.
Grade: D-

Omid Kordestani (@omidkordestani)

Executive Chairman
Bio: “Executive Chairman @twitter”
Device: iPhone
Verified: Nope!
Frequency: n00b—he’s tweeted 37 times since joining in March 2010, and has only liked 78 tweets.
Style: He rarely tweets, but, when he does, he retweets people like President Obama or Elon Musk. He also seems to love to use emoji. That is, when he tweets.
Grade: F

And the newest addition to the executive team, as announced today:

Kayvon Beykpour

Co-Founder and CEO of Periscope
Bio: “Co-Founder & CEO of @Periscopeco. Co-founded Terriblyclever, acquired by Blackboard in 2009. Stanford CS ’10.”
Device: iPhone
Verified: Nope!
Frequency: Average—he’s tweeted 2,621 times since joining in May 2008 and liked 4,039 tweets.
Style: He’s a big emoji user and tends to share a lot of Periscopes. (No surprise there!) He also replies readily to Periscope users.
Grade: A

See more here: 

Here’s How Well Twitter’s Execs Use Twitter—Or, Um, Not