What should I do with my unused domains?

[Jenie0109]

Then don't make a lot of websites if you knew that you cant prioritize them all.Seesh!Waste of time

[chickenjoe]

I know this thread is old, but I want to put my 2 cents in.

If you plan to keep those domains for a couple of years, then the best thing to do with them is NOT to park them. Create some content on it and age the domain.

Why age the domain? Because Google shows more love for domains that have been around for awhile. Plus, once you have aged the domains properly you can sell the domain for a good price. It's a great source for boosting rankings in the SERP.

If you want to put it to use visit this article. It will show you how to use feeds to put content on it. Then just optimize the site with some ads so you can get more money then you would from parking it.
Put your dormant domains to use with WordPress | Theme Lab

Peace.