Been working, almost a year now on a cool application called EarthPlat. EarthPlat: Plot | Plat | County | Boundary maps. Take a look at it. BUT wait! Take a look at on Monday December 28th... 

I will be putting our new version up then, currently all the new features are on our development site. Which you could log into there too if you knew where it was :-).

You have to register at EarthPlat.com, but it's free, no credit card needed. Basically you can look up Parcel boundaries for addresses and owners. You can search plat maps, plot maps and the boundaries lines our loaded into Google Earth. Pretty cool app, check it out!