Twittad: Twitter advertising exchange platform

Twittad is a Twitter advertising exchange platform that allows users to post their own Twitter ads on it. The ads will be displayed on the left side of the Twitter user profile page. You can set the price by week/month, or set your own price. During the process, you need to provide your Twitter username and password. Twittad will charge a 5% handling fee. Advertisers can also look for ad placements here, and the ad costs will be paid via PayPal (with a minimum payment of $20).