Right position, #1. I agree but even stronger. Only reason not to park your domain is if you have it in use with a real website. It works well even if the domain does not get type-ins. Even if only one person in the world wants your domain, he or she is likely to visit the domain and see what's (not) there. On our site, domains that are parked are MUCH more likely to sell than domains that are not. Only about 10% of our listings are parked on our site, but about 50% of our sales are parked. That means our listings that are parked are 5 times more likely to sell than domains that are not.Originally posted by DotDuDe
1.) Make sure you have a parking page with the link to contact the domain name owner (this works pretty good if you have good amount with type-ins)
I also think it helps to park them on a reputable site where buyers get assurance that their transaction will be safe. If you park your own, add a message about how your escrow service (escrow.com, afternic, sedo, whatever you choose) guarantees a safe transaction for the buyer.