I'm not really in Octopart's demographic so I can't attest to its usefulness, but the comments on Reddit seem incredibly positive. You must be doing something right. Congrats on the continued praise and positive feedback you guys seem to be getting.
Yeah, been trying to push them on the oldheads at work. It's so much better than Digikey or Mouser. They should promote it in the engineering mags (EDN,etc) or get Bob Pease or someone like that to write about them. Get the word out.
Although, unfortunately, the time v.s. maturity of audience curve for reddit really shines through here...
Here is a comment that really sums it up, though:
this lists all the parts that may fit your description, then when you choose one it gives you who has it, how many in stock and for how much w/ price breaks. !!!!! 15 mins of searching reduced to 30s. I wish I had that last semester...