As the company grows and about this 25 or so employee size, your main job shifts from building a great product to building a great company.

I prefer to invest in a company that's going after a small but rapidly growing market than a big but slow growing one.

You don't need to make the structure complicated, in fact you shouldn't. All you need is for every employee to know who their manager is.

If you don't love and believe in what you're building, you're likely to give up at some point along the way.

You'll get more support on a hard, important, project than a derivative one.

It's easy to move fast or be obsessed with quality, but the trick is you have to do both at a startup.

What you want to do is innovate on your product and your business model, management structure is not where I would try and innovate.