Just released a new version of my Excel spreadsheet that lets you plot data on a Yahoo! Map, this makes an adjustment to get around a server side change that made the template unusable by just about everybody. It’s now fixed, hooray!
People have asked me to add geocoding to this and I’ll try to get around to adding that, maybe over the holidays. I also want to add the ability to specify custom icons for each map position, which shouldn’t be too difficult.