If I have OnlineTumbleweeds.com and you like the idea of developing it, why wouldn't you just buy TumbleweedsOnline.com? I don't see what value the domain owner is adding. There's not going to be a ton of SEO value to an old domain that's just been parked.
Fair enough. I was thinking that perhaps owners of desirable domain names (short, catchy, specific, etc) who also don't have the time for development could benefit.
But, I think you're right. There'd be a lot of not-so-desirable domains to sort through.
