As someone who is currently suspended (@capttaco) and has been suspended for over a month, let me add some of own experience to the conversation.
First, I'm not a spammer, nor have I promoted anything offensive or disingenuous. I've a software developer, that started using Twitter three years ago when I attended C4[1]. As far as I can tell, my suspension was the result of having a website hacked. The Facts: - Inside of my profile, I linked (as do several people) to my personal website. - Over a month ago, the site running wordpress, was hacked and a malicious link was injected into the top post of my blog. - Overnight (EST) on a Sunday, the site was marked by Google as malicious and my twitter account was suspended. Solution attempts: 1) Upon realizing my site was hacked, I took down the wordpress blog, used Google's webmaster tools to request a review and the malicious warning was removed within a few hours. I sent a support request to Twitter notifying them of how I resolved the issue. 2) After 2 days without a response, I tried logging into my twitter account. I realized that even though I was suspended (and therefore couldn't post), I was able to modify my profile. So, I changed the link in my profile to another site (that Google didn't think was malicious) and sent another support request. Still no response. The lack of customer support from Twitter has been appalling. I enjoy twitter, as a user and hopefully one day as a developer (which unfortunately has been halted, since I can't access my account at all from an API). I'm frustrated, but not nearly has high profile as Louie Mantia. I even tried having some friends intervene (to no avail): http://stationinthemetro.com/blog/2009/5/26/twitter-suspension-please-help-rob-rhyne.html I'm a licensed user of Twitterific, Birdhouse and Tweetie (both Mac and iPhone), which are useless with a suspended account. Also, FYI (to developers), when you're account is suspended the API sends back a generic authentication message that "The user is not authorized." It leaves little opportunity for developers to differentiate from a suspended account and a bad authentication.