Couldn't agree more. Unfortunately, there's a gap between what many lean approaches advocate (Adwords), what startups think they need (features/press) and what actually works. The most effective way to learn is to go out and find the people who should be using the product, and talk to them.
I'd disagree. AdWords is great for validating B2C products because you NEED the opinion of MANY people to judge the viability of your product/idea. In B2B your customer typically has money on the line, and it's quite straightforward for them to evaluate your value proposition: "Does this make me money, or lead to making me money, how much?". In B2C the question becomes: "Do I like/enjoy/have fun with X product?" typi…
This doesn't directly translate to people opening up their wallets and paying for said product.