I did a side-by-side comparison of .ws with other so-called "marketed ccTLDs", and this is how they stack up. I would venture to guess it all comes down to marketing. .CC got popular with Beauty.cc going for 5 mil. Dot TV has been extensively marketed. .bz (almost non-existent). This could serve as a warning to the new TLD registrars. Market your TLD or die!
I still say go for it if you think you can get a keyword in .ws, but don't bet the "bank" that it will a "popular" extension. In this situation it boils down to the word and not the extension. If Retirement.ws is on page 2 under the search word "retiement" is it any less valuable than any other non-com/net/org on that same page??
site:.cc sex - 147,000
site:.tv sex - 75,800
site:.ws sex - 62,700
site:.bz sex - 16,800
site:.cc travel - 74,500
site:.tv travel - 79,800
site:.ws travel - 32,700
site:.bz travel - 10,900
site:.cc sports - 26,300
site:.tv sports - 78,200
site:.ws sports - 18,400
site:.bz sports - 2,230
site:.cc entertainment - 18,500
site:.tv entertainment - 71,900
site:.ws entertainment - 9,120
site:.bz entertainment - 1,320
site:.cc music - 83,300
site:.tv music - 105,000
site:.ws music - 35,900
site:.bz music - 4,150
site:.cc pictures - 60,600
site:.tv pictures - 105,000
site:.ws pictures- 56,000
site:.bz pictures - 2,040