Sam was one of AdGrok's angel advisors. He is intense in person. He talks quickly, and his signal-to-noise ratio made us all take notes during our meetings as fast as we could write and type.

As an example, he told us that our company's valuation would fluctuate wildly up and down, that timing our investment rounds was critical to our success, and that valuation is driven as much by hype and gossip as by real value--especially in the early stages. It was all stuff that just rings true to you immediately, but that insight isn't apparent or obvious without experience.

(Thanks for the help, Sam!)