Although the marketing site uses Nitti, the iA theme actually uses Merriweather.

Agree with Matthew. It's not a serif vs sans issue, just that the font you have chosen is very thin and has a high contrast. It looks like a Didone, which are not a style of font that are particularly easy to read. If you want a font has has the same upright feel to it, but is more readable, I'd suggest you check out FF Meta Serif.

I'd also suggest specifying your monospace font. The platform defaults, Menlo and Consolas, are both a lot nicer that Courier, in my opinion.

This is a very good walk-trough of how colour works on the web and I believe Sketch's approach is a sensible one.

It would help designers immeasurably if Chrome would actually fix this bug.

Tacky

Did you you rattle of this protocol in your head while you were waiting for the fourth prick?

There are 7 billion people in the world. Plenty of scope for a mix of generalists and specialists and the range in between.

Tim Brown of IDEO tried to break away from the concept of this as a linear scale with T-shaped employees: http://quibb.com/links/ideo-ceo-tim-brown-t-shaped-stars-the-backbone-of-ideo-s-collaborative-culture/view

Mark is right to touch on the conversion rate. Every form has a conversion/completion rate, even an admin form, and it's a really useful metric in terms of arguing a business case for reducing the complexity of them.

A lot of times it's just assumed that presented with a form outside of a sales scenario, people just fill it in - and this is not at all the case.

This is by far and away my biggest complaint with Sketch. It's truly maddening to not be able to reliably set a line-height.

Anything with a sickness over 10 is going to get messy.