I've been running hubski.com for 10 years now. Luckily we have remained small enough to have mostly small problems. Similar situation though, no ads, no revenue. I intend to keep it going as long as possible.

>Fun times.

It is important to keep it fun. I've done silly things like https://hubski.com/weather and I am seriously considering adding user vs user chess.

I rolled a custom IRC that I am pretty proud of: https://hubski.com/chat