[jrgoff]

Building your own carries it's own set of risks. I can't afford the infosec, IT, devops, etc. that a large tech company has. Sure if I build my own and get hacked, I may have more ability to directly effect the situation, but I will likely have to spend much more of my time wrangling tech and may end up being more likely to be hacked overall.

[barbazoo]

As I said in other places, I was more thinking of managed forums, shops, etc.

[tpoacher]

those carry their own risks.

I once created a pretty basic phpBB forum for my college.

Spammed by russian hackers within minutes.