Twitter co-founders Biz Stone and Evan Williams appeared at an INFORUM event at The Commonwealth Club in San Francisco, where they discussed, among other things, the possible launch of Twitter Events and a specific Twitter event they’re aiming for: member No. 1 billion.

“Twitter will get to 1 billion members,” former CEO Williams said, as reported by ReadWriteWeb, which added that the microblogging service currently boasts more than 145 million members, so reaching that milestone will still take some doing. And Mashable pointed out that Williams stressed that Twitter users are different from Facebook users, emphasizing Twitter’s role as an “information service.”

In talking about the potential launch of Twitter Events, Stone said it was something Twitter brass has “been talking about forever” internally, adding, “I think that’s something that’s going to be coming up soon. Twitter electrifies events. You’re connected to it in this matrix. You want to be connected to it, if you’re there. If you’re not there, you don’t want to hear about it,” according to ReadWriteWeb.