Yes. I would disregard comparisons with BitMessage. I don't think they really target the same market. BitMessage wants to be more of a private snooping-free e-mail system. Twister wants to be more of a public decentralized social network (resistant to censorship).

There may be some technical overlap and functionality overlap, but I think they are more different than similar. It's like saying Gmail is the same as Twitter, since you can also broadcast messages with Gmail, and you can also send private messages with Twitter. But the two really aren't the same.