While NoScript is a security first convenience next stands, YesScript is a convenience only addon leaving the security back in the browsers hands. On the maintenance side, NoScript filters can be a bit tedious to add manually, YesScript lets you add simple domain and subdomain names. However, the biggest disadvantage here is that YesScript doesn’t have wildcard support in the domain name entries. Every domain or subdomain is taken as an individual entity and disabled. This is definitely developers have to take a look at.
Click here to install YesScript firefox addon. YesScript is supported on Firefox 1.5 to the latest.
YesScript to me is a simple useful addon with lots of room for development!