[rlpb]

Your problem is that people don't know that they would find your product useful until they have it. Who is actually going to be looking for your tool?

Drew Houston has talked about this in respect to Dropbox (http://www.justin.tv/startuplessonslearned/b/262672510) - who knew they needed Dropbox until they found out about it? USB sticks and email work just fine, right?

I have exactly the same issue with Synctus - VPNs and Terminal Services work just fine, right?

What you need to do is find a channel. People who are already in the business for whom your product is a value-add.

For example: for Synctus, I am reselling through IT professionals - the people who might recommend and install VPNs and Terminal Services for their customers.

In your case, you might see if you can approach specialist car search and real estate search sites - if you can work out something that you can give them which will add value to their service too.