I've been using Parked and AA for parking because I can add original content on those parked pages. Just look at DryRubSeasoning, ChickenGrilled or BounceAbility. All are dot coms.

Since I started adding original content my visits are up and so is my ppc. One of my domains parked at AA made $56 in March. Another at Parked made $21. Not bad for three word domains. The original content made the difference.