Cross-Tab is also very similar to any other suvey sites, but instead of rewarding the users with cash, they give out gift vouchers and CD's, etc as a reward for every completed survey.
They don't send you surveys very many like Ciao India but they do send some surveys occasionally but reward you with great gifts.
Their rewards include Shoppers Stop gift vouchers, Music CD's, free magazine subscription for 3 to 6 months, and donation to CRY on behalf of those who submi the survey.
The surveys duration starts from 15 minutes to 30 minutes and depending on it, you will be rewarded with free gifts of your choice. The survey type will also vary most of the time and will be of very interesting topic and you will enjoy it.
You can join Cross-Tab by either sending a mail to sushma(at)cross-tabsurveys.com regarding your willingness to join them to answer surveys. You too can also join their newsletter and I suppose you will be added to their mailing list if you do so.