Really neat idea and well executed. For example you can search for available "hunt" domains across different verticals:
http://namegrep.com/#(:industrie...
Hope they add more Sets soon. I can imagine people willing to pay for premium Sets.
When I saw the tagline I was like, "oh man this is awesome except I wish I could grep for something like /[english word less than five letters]hunt/ and have it work.
Then I clicked the link and saw the "sets" feature. Genius! This is my new domain search tool.
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Very nice implementation, great name and they know their audience. And fun.
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Nice, trying to find domain names is incredibly difficult, so for those in the know, this should certainly help!
Vision Directory
Product Hunt
Lex
Strikingly