I've no idea really, but I certainly meet interesting people on Twitter. It's also good for latest news. I preferred Twitter a few years ago though - recently it's got spammier.
I think Twitter did a pretty good job in recent days to take out spammers, and people who encounter spammers are people using those auto bots follow everyone crap that no one uses no more.
very smart way to get your site listed here,lol Yes, twitter can bring traffic, and by using some twitter marketing tools, you can get targeted traffic.
If you cheat your way into it and have thousands of followers then yes and only for a short amount of time... apart from automated accounts twitter has made it really hard to get traffic it's more of a popularity contest amongst friends than anything else....
I do get lot of traffic from Twitter, it's good for you if you need just the traffic, usually the conversion is low so don't expect to use it to sell stuffs.
it does bring a lot yeah, i have around 1.200+ followers and my tweets bring about 30-40 clicks though per tweet which isnt amazing but... it all counts
Twitter is really helpful in divert traffic to your blog or site but your teet have to be appealing with interesting words to attract visitor to your site or blog.