ArcWeb mapping web service

If you have the need for any mapping solutions, take a look at ArcWebServices.com  They have a very easy to use API once you read over the documentation.  I have created the integration for my current employer LicketyShip, Inc. The mapping service is really easy to use once you understand what the API requires for data.  You can calculate the total street distance between 2 addresses, had turn by turn directions returned to you.  The cost for each call varies and over time it may not be the cheapest service.

Integrating this into the website when you do not know VB/Java, etc. is pretty slick.  Their website has no documentation for PHP installs which is suprising.