Well I did and what happen ... my site is not ranked anymore in google

I cancelled the option and still no luck. It has been 3 days and still no traffic from google.

I used to get 30 - 50 daily search traffic from google but now 0 . . .

I read a few post about it in google webmaster group, it seems a few people were facing the same problem but their website went back to normal after a few days / weeks.

Don't know how long I need to wait lo...

Just want to share this...

well naah...just do something else

Has your website been penalized?

You can try submit a re-inclusion request through the webmaster central interface.

You mentioned you get 50-60 visitors from google,just wondering what key words you used?Because competitiveness of keywords change every time,you need to keep update.

I don't think a site could be penalized for this reason. Despite of this, to make sure if Google has removed your site from the index, you can check it out by searching site:www.YourDomain.com. If it doesn't return any results, your site is removed from the Google's index.
I hope it's not the case.