Andy, Domainhop.com a friend tried and they did pay if I remember right. Domainhop is a good one if the site has a lot of traffic and you are only wanting to find a way to at least get paid for the large amount of traffic from expired traffic.
As far as someone going there and seeing a Domainhop page, I think the likelihood of them wanting to click there is not real high as they tend to have to much to pick from to click/search on.
As far as the sites that you find when you click on them, I do not like the Domainhop as well as the other places. Kanoodle is their search engine and it is not as great as say for instance Google, and most the rest are run by Google. Plus one would get paid a lot more using the ones I mentioned above.
TrafficClub.com is one that we are trying right now, although I like the appearance of the site as it looks like either DomainSponsor, Google Ad Sense, or some search page, they aren't bringing in much revenue for clicks nor are they bringing in as many hits. They don't count some of the hits that the other places counted. As far as their minimum, I didn't see TrafficClub list a revenue to reach and it may take awhile at that rate.
GoldKey.com is also another new place that we are trying and we like that place a lot. They already paid me too. Minimum is $50 if I recall correctly. They have the best templates. They have the domains set up right away with advertisers that go along well with the name of your domain name. A person would be much more likely to click on one of those pages than some of the other sites, as the links are right in front of them.
Parkingsite.com is another new source for domain parking. They did pay me a couple of times. Clicks revenue is not very high per click there. They do have very nice templates there. They do have advertisers that go along with your domain idea sometimes, sometimes they do not. I've asked them a few times for the next pay and they haven't paid and I keep asking them. They used to have a button that you could go and request payout, but for some reason that button seems to be out of use at the present time.
If you have more than one domain that you wish to park for revenue that you are not presently using for a site, you can try several of these places mentioned above and just see which one you like the best.