Chitica is good for those ahe enough space on their site and blog.I would not recommand you to use it as ads are not relative to articles and therefore visitors doesn't click ads.

It consume more space.

Chitika eMiniMalls Javascript code, similar to how AdSense works, generates contextual advertisement on the site or blog.
Some characteristics:
* Payouts are sent monthly via PayPal with a $10 minimum or cheque with a $50 minimum.
* Easy and fast registration.
* Chitika eMiniMalls are specifically optimized for marketing products for purchase through the Internet, but not for services or information.
* Ads can be easily customized to display specific products or product categories in non-contextual mode, or highly relevant contextual ads based on your page's content.
* International clicks accepted.
* Advanced 24/7 statistics.