Over at Frame Digital we've been working on a new tool to create embeddable google maps using photos from Flickr users. Its one of those often touted mashups, its designed to be easy to use and we hope it will be useful for people who can't create these sort of things themselves. Its got loads of features, such as multiple map creation (registration required) custom photo dimensions, color palettes, map size, the list goes on.
There's a few tools out there that already do this sort of thing such as mapbuilder.net and MyPicsMap, but we think MapFlickr has some different features that make it stand out. If you want to see more Google map toys, Mashable has a great list.
The best way to understand it is to use it, head over to imapflickr.com and have a play. Just remember, your photos need to have geolocation information added to them before it will work!