Google, Yahoo, and Microsoft all have come out with their little API's (Application Programming Interface) so you can create maps on your own website. However, API's middle name is "Programming", which means it can easily fly over the head of most people. Easier option? Yep, I got one for you.
Instead of writing your own map from scratch, try Map Builder. Map Builder is a free online application to get you started quickly. Everything is relatively intuitive allowing you to choose custom points and icons.
Update: There is a monthly fee-based real estate option. I haven't signed up for it, so I'm not really sure what the added benefit is. If anyone signs up for it, please fill us in!
Other than its ease, why or how else would you use it? Here are a few ideas:
Other ideas? Post a comment. We'd love to hear them!