Content Monitor Change

Hello is there a easy way to change the content monitor´s search method like this:

if i insert a word into the content monitor for example: " www ".

if i do this right now the content monitor will only notify me if a post contains the exact word " www " and will not notify me if they post
" http://www.somedomain.com "

i want it to seach like that so that it is much easier to protect the site against spam.

Regards, Roger