Do you get the snapshots from the companies themselves or your employees collect them? What's the incentive?

We receive the project photography from architecture and design firms responsible for designing the offices. The incentive is to promote their work for others to see.

Thank you.

I've been visiting your website for years and never realized it was an actual business. Have you written or presented about it somewhere? I'd love to learn your process.

When I talk about it on HN it is mostly in the context of not using ad networks and selling/hosting our own advertising since that is of interested to the folks here. Other than that though, the audience here isn't the main one we're trying to build so I haven't spent much time talking about the process of building the site.

Would you mind to share that is this business profitable or not?

It pays for me to work on it full-time and I have a couple employees now.