Twitter co-founder and CEO Jack Dorsey has opened up for the first time about his feelings over US President-elect Donald Trump's use of Twitter. Speaking at the Code Commerce conference in California, Dorsey reportedly said that he feels "complicated" over Trump's tweeting habits.

Dorsey's comments follow Twitter's recent claim that it will not hesitate to ban Trump's account, if his tweets infringe on the microblogging site's hate speech policies. The social media firm has reportedly cracked down on a series of Trumpbots – automated accounts – and has suspended several notable accounts. Tweets from some of these accounts were previously retweeted by Trump.

"He's [Trump's] known how to use it for quite some time. I think it's an important time for the company and service," Dorsey said, according to the Guardian. "And having the president-elect on our service, using it as a direct line of communication, allows everyone to see what's on his mind in the moment. I think that's interesting. I think it's fascinating. I haven't seen that before."

He added, "We're definitely entering a new world where everything is on the surface and we can all see it in real time and we can have conversations about it. Where does that go? I'm not really sure. But it's definitely been fascinating to learn from."

When asked whether he felt responsible for Trump been elected president, Dorsey said, "America is responsible for Donald Trump being president. I feel very proud of the role of the service and what it stands for and everything that we've done, and that continues to accelerate every single day. Especially as it's had such a spotlight on it through his usage and through the election."

Meanwhile, among those accounts recently suspended by Twitter, some were reportedly not entirely automated. From the most popular accounts, including one which went by the handle Petriotic Pepe and had over 100,000 followers, were operated by people who made use of automated scripts to tweet out at Trump, according to a report by Motherboard.

The social media giant also recently suspended a host of prominent alt-right users, for violating the platform's terms of service. Following the removal of alt-right accounts, supporters said they would hit back at the social media giant by creating scores of what they called "fake black person" accounts.