I've bought three patches of land so far. The first I bought and sold quickly. The second I bought right before crashing - it took my money, but having looked for a while now, I can't find it (and it doesn't show up in the My Land menu). The third I bought to continue my testing.
I notice that on the hotline someone has posted that there is no land available. I've found some, but can understand why others can't.
I'd like to suggest all unclaimed land be listed on the World Map so it's easy to see what is available. I find available land by going into Edit Land and looking for uncolored patches. This isn't particularly intuitive. There is - last I checked - no "Land For Sale" on the Map. If there is a more intuitive way for people to locate land for sale, perhaps someone can tell us the best way to find it.
Lastly, I'd put my third parcel up for sale, but having lost funds on the second plot/crash, I'm not interested in risking a repeat as I'm now low on Preview funds (unless I price gouge). Not sure what can be done to correct this, but it's a problem. I'm more interested now in uploading and testing textures and the like. I need money for that as well. Perhaps a larger fund - or a refill after each version download.