Google "My Maps" Proves Useful in House Shopping
After looking at a dozen or more houses in a short time, the memory of what I've seen often blurs together. Google's "My Maps" feature helped me to keep the locations and vitals of houses in perspective. I've heard complaints from many consumers that the various MLS Web sites are antiquated, and buggy. In my experience, they are black holes that suck Time and provide little organizational value.
The dream is a system that has all the listings available, bundled with criteria search and annotation. Google Base strives for that, but falls short in the completeness of listings. Several properties that showed up in my Re/Max Actris "Gateway" were nowhere to be found in Google Base. Zillow is trying to fill the gap with a house-valuation approach, but their details are spotty as well.
A nice feature to add to this interface would be numbering the locations listed, so that a quick glance from list to map could match them up. Lacking that, I used the symbols available (camper, cup, river, push pin) to distinguish houses.