These seem pretty good overall. Although I am rather unconvinced with the twitter ones, but then again I always thought twitter was a waste of time. But the others seem good.

There a couple of surprises: (i) there are two single founders, and (ii) there are a couple of pairs that seem to be in the same space. Obviously embedster and embedly seem to be doing something similar, but there was also a couple of search engines that do something similar as well. I wonder what Paul thinks about that. Won't the competition cause bad vibes in the meetings, etc.

Of course it is possible that I was mislead by the short descriptions and the companies do not really compete.