[fsavard2]

Do you think/feel this affects how close-knit a team can be in your company?

From what you say you don't seem to use video much (for one-on-one), so a lot of visual/non-verbal is lost (also there are no non-work regular meetups, e.g. lunches, which I think helps with nurturing a bit of informality).

Also when someone is sitting next to me the threshold for asking a question is rather low, and when working remote I tend to waste more time looking for answers on my own. So my guess is that would affect productivity also.

But still I wonder if there are many of these completely remote largish (> 15, say) companies. It's a very interesting model.

[rwmj]

We're pinging each other on IRC all day, and yes it interrupts your flow just as much as asking someone next to you.

Most open source software development happens this way - IRC, email, git, patch review ... It's a very well-proven model.