Allow wildcards in URLs when creating rules

When creating a rule to block access to a computer based on a www, it would be nice to be able to block the entire domain by using a wildcard, for example HTTP://*.google.com

Currently you have to enter all the subdomains in order to effectively block access but this doesn't help if they come out with something new in the future. Using wildcards would allow blocking current and future locations on the entire domain without the need of the full-blown Parental Controls which may contain features that aren't needed by some folks.