Here is a new tool from Yahoo that lets you add any graphic as an overlay on a normal Yahoo map. A slider tool lets you make the graphic transparent so the underlying map can be seen.
Mapmixer gives anyone the ability to easily place a graphic (I tried GIF, JPG and PNG) over the web 2.0 version of Yahoo’s interactive maps. The process takes four steps:
1 – Choose the city or location for your overlay.
2 – Upload your graphic.
3 – Adjust the size and position of your uploaded graphic so it fits the map.
4 – Tag and publish your Mapmixer.
This site has a lot of potential for educational projects.
To appreciate the above map a little more, check out the full screen version.
![Serious Corgi [493/1000]](http://farm8.staticflickr.com/7090/7155443722_7a0a01e683_t.jpg "Serious Corgi [493/1000]")
![Miss Holman's Wedding [18/52]](http://farm9.staticflickr.com/8008/7152073799_fcee9b0723_t.jpg "Miss Holman's Wedding [18/52]")
Great link. The opacity option makes the tool really useful. I think I may have to play with this one a bit and see if I can use it in class.
Thanks!