OS X V10.6 Snow Leopard :: Create A Workflow That Will Monitor A Webpage?

I am trying to create a workflow that will monitor a webpage and send me email if the page contains a certain keyword. I got it working, I get email; the email contains the keyword, or is an empty message when the keyword is missing.I would rather not get these empty messages is possible. Until I figure this out, I may send these message at some gmail address and create a fiter there to forward only message with that keyword. Not elegant but should work. Anyway, long term I want a more elegant solution. Here is what I have in Automator:

1) Get Specific ULRs

2) Get Text from Webpage

3) Filter Paragraphs (and here is where I check whether the keyword shows up or not)

4) New mail message (which contains they keyword from #3, or is empty)

5) Send outgoing messages.

As I said, the workflow always works, and will send a message with that keyword, or an empty message. How do I make the workflow send email ONLY if they keyword is detected? There is not IF in Automator as far as I can see. This is the first time I try to do something in Automator so maybe I am missing something.

Info:
Mac OS X (10.6.8)