How should customer development look like after the product is launched?

A good question. The fact that you don't have revenue yet may be result of a number of factors. Without knowing more specific information about your product, key customer segments, your team, and other key data, it's not possible to give you a definite continue/or shut down recommendation. That said, generally, I would recommend adding a third decision point - the pivot. Many businesses don't see the expected returns after initial launch or MVP testing, and decide to pivot to a different direction, ultimately finding success. The pivot can be a slightly different product (product-based pivot), a slightly different market segment (market-based pivot), or both. Here are some recommended action items to help you uncover extra insight as you examine whether to continue, close down, or pivot: 1) How did you organize the initial customer's interviews? What kinds of questions did you ask them, and were any of them leading questions? 2) Review your core customer segment(s) at this point. How did you determine a product-solution fit to them? Are the customer segments clear and specific enough? 3) Did you run a MVP (minimum-viable product) to test potential product-market fit? Were any findings contrary to your initial assumptions? 4) Consider running another set of quick interviews. Determine any differences between the new interviews versus the initial customer interviews. 5) Make some hypotheses on the key assumption or factor that could have contributed to zero revenue. Run a basic test to confirm that hypothesis. If correct, you may be able to pivot by eliminating that factor or substituting with something else. For example, pretend that your core assumption is that young urbanite foodies will appreciate recommendations on best dishes. If that assumption turns out false, then you may need to consider pivoting to a different customer segment (professionals who don't have time to research the best dishes?) 6) Examine your pricing model. How did you determine it? What tests have you made? Try running a few simple tests with alternative pricing schemes, and see if anything changes. 7) What is your current monthly burn rate, and how long can you project to last at this rate?

Mobile app that has launched: You need ALL of the following: 1) Trending towards or at 100000 installs within first 90 days of launch; 2) Day 30 retention rate of at least 20% 3) Core "MTM" (metric that matters) healthy (dependent on business model, usage model etc) 4) Evidence that growth is just "getting started" with plenty of upside left. Happy to talk more in a call.

Find apps that are B2B and go to the review sections. Specifically going to Google's play or Chrome store and look at reviews and follow them to Google+ to engage. I took that same angle for B2C app I was building last year. Check it out. http://blendah.com/post/37331434653/lean-startup-hack

Ries owns 'Lean Startup' trademark. I doubt 'lean' by itself is trademark-able, and isn't claimed by Eric. Someone else may claim 'lean career development,' so might be worth a trademark search.

I'd avoid the cold email. The best way to get inside big companies like distributors is to "social engineer" a connection to someone there. Find a 2nd or 3rd degree connection on LinkedIn. Hang out at a restaurant near their HQ and look for people with the right badge on. Ask your potential angel for help connecting you. If they can't, they might not be the right investor for your company at this stage. Their investment should get you more than money, it should come with connections, advice and mentoring. Basically, there's no easy way to do this and every situation is different but it's going to take a lot more than a cold email or phone call.