No I haven't seen but i know some site providing ads.. tweetads,twitads... However there is a risk of loosing the account...
A bit more info I found! Magpie - the Advertiser‘s Guide You have a great business and a compelling offer, but you’re looking for ways to get the word out faster and more efficiently. At Magpie, we are about generating a conversation for your brand within a social networking context – Twitter. With more than 2 Million* reachable Twitterers, Magpie is currently Twitter’s largest and fastest-growing ad network. Magpie enables you to deliver controlled, relevant and targeted messages into a highly engaged and responsive marketplace. Unlike traditional online advertising methods, Magpie identifies key influencers for your brand and engages them to spread the word - directly from you to their Twitter friends.
IMHO your account would have only been suspended for over excessive usage of ads! Unless there’s another reason why it would have been suspended? If you could tell us it would be very much appreciated!
Have you approved the ads via your backend? I have around 300 followers and I am getting ads on a 4 hourly bases - Or is this just one of them say anything post to get you post count up
I would stay far away from spamming twitter like this, twitter is removing accounts left and right for spam. I would suggest building affiliate pages on your site and send your twitter users to your own pages much better ROI!
I tried several ads in Twitter, to long time to remember, but none of them pay so it wasn't worth to me