The Internet is fast becoming the new "Yellow Pages".
More and more people use it everyday and it's growth shows no signs of stop of pageing, or even slowing. Shouldn't you be there?
There are currently 60 million Internet users around the world! That's a pretty large amount of people.
Even you figure it out conservatively, how many of these people could conceivably be looking for your product or service.
If you're not on the web they'll go to your competitor!