Hi
What i have built is that using RSS technology i can track more than 28 forum, blog, website, social media websites, etc in one go and this also includes google alerts. And all this using the keywords that define your product [Keyword 1, Keyword 2] etc.

So now you dont need to wait for google to alert you but if someone adds a blog entry somewhere in any google blog or technorati or digg etc, you know immediately.

Hope this helps.