Filter out images search engines that don't have query string

Issue Summary

For example,

http://images.google.co.uk/imgres?imgurl=http://static.flickr.com/23/288...

Does not have a query string but still shows up in the log.

An alternative to filtering out would be to put in the Keywords column something like "[url]" with that text wrapped in the URL. So using the example above:

[url]

Probably easier just to filter referrers that start with the subdomain 'images'.