Mashups

I've entered the world of mashups, and I think I'm going to turn back. Thus far, I haven't found anything very helpful. Yes, it's fun to see pictures of places visually laid out on a map, but I can use Google's image search to find pictures of Burlington, VT just a fast - if not faster. I used Wikipedia to see other mashups, but I didn't find an application that made my life easier. Yes, I now know what a mashup is; no, I will never use a mashup.