Rated 4 out of 5 stars

Nice addon, however I miss a feature. Is it possible to set a time interval to remove cookies? With some sites I have to enable cookies, but I do not want the cookies to remain too long. I would like them to be deleted in e.g. 30 minutes. Is it possible to do that?

This review is for a previous version of the add-on (2.2). 

Yes

Yes, you can set the "Expires On" field to get it expired after some time. (Ex: If the current time is 27-07-2011 10:00:00, please give the expiry as 27-07-2011 10:30:00. )

As browser has its own logic to delete it's cookies, cookie might be showed in the cookie manager (in RED color) even after the expiry time. But it is guaranteed that browser won't send back this cookie, once it is EXPIRED.