I would go for it (advertising only as the complete yourdomain).net, but you're still setting your users up for confusion. Think of the average 13 year old mysp

I would go for it (advertising only as the complete yourdomain).net, but you're still setting your users up for confusion. Think of the average 13 year old myspacer, or 50 year old mom. Not everyone has a photographic memory like you. They will forget the extension, but remember the name and be surprised with a nasty link-squatter or worse.