I stumbled upon dexterity.com first after looking for material on procrastination; someone had linked one of the articles there. For some reason I didn't like the site, and the linked article didn't resonate with me at all. I don't really remember why, though.
The funny thing is, I kept ending up there unexpectedly a few more times, before a blog I read at the time linked the main site. There I stayed.
It took me another week or so to notice the sites were actually related. X-D