Facebook adds 5 divs, 9 spans and 30 CSS classes to every post in the timeline

I interviewed at FB recently (didn't pass the in-person) and the one question I asked each interviewer was "tell me about the parts of FB I don't see" - because they have an odd hiring process where you don't figure out what team you'd be working with until after you are hired...and I had no interest in pushing Ads, but understood that wouldn't be a great pitch from my side.

Turns out there is a LOT about ads at FB. Not everything, but a lot. Particularly in the Seattle office.

I was surprised I hadn't passed the interview (thought I did well), but in retrospect I'm glad. Whether that's sour grapes on my part, the fact the news has been full of reasons to be glad not to work at FB, or that I was very concerned that anything I did would end up pushing ads is something I can't be 100% certain of.

I work on machine learning and natural language processing projects. We use some tools from Facebook Research. These tools are great and open source.

Every time I want to contribute to them, I feel guilty because Facebook is behind them. I also have very mixed feelings for the devs working full time on these tools at Facebook, they're smart and doing interesting stuff, but they chose to work for Facebook... Earn big money? Destroy the world? Work on fun stuff with amazing work conditions and ignore what their company is doing? What are their motives?