Valueless (IMO):
writingcrap.com
world24hour.com
washingtonoffroad.com
lowfeelender.com
Other:
terriblegolfers.com - A golfing forum? From my knowledge of golfers, they tend to take it seriously, even at amateur level, so many likely wouldn't go to a forum named that. Not all though, so could be of use. Although consider how many people out there are setting up a golfing forum who have a decent budget and like this name.
littlerichguy.com - catchy, someone might like it. Who knows, someone with too much money if you are lucky

(IMO likely never sell it, as not really searched for keywords, but you never know on the right marketplace)
groovyclips.com - Is catchy and could sell. Not for a massive amount likely, but can see a 3 figure sale.
flyingbillboard.com - hard to say as I don't know the niche value, but reach out to the larger companies. I would imagine some of them are profitable and charge a fair bit for their service. 3 figures, maybe more if lucky. (or 6-7 figures in 50-100 years when the world is like the Jetsons..

)
luxurycarmakers.com - sounds good on face value, but IMO a luxury car maker is a manufacturer, and they tend to have a brand or corp name not a keyword name. That said, there is potential for one of the larger companies to want this for their collection or for some ad campaign. Hard to say as up to them personally. Maybe send out some emails