[placeybordeaux]

Private by default, but the default of 2 foreign tx seems to be largely what people use. It'd be fun to trace it and start to show the probability that a given tx traces to a given public key. I imagine that the older tx have closer and closer to a uniform probability across older addresses. Might make for a good data vis project.

[vocatus_gate]

Concurred. I hope they increase the default mandatory mixin level.

[placeybordeaux]

Why do you assume that the default is too low? There are obvious tradeoffs here, some analysis would do the coin good.