Why are some people's info (age, # posts) empty? Are they banned?

It usually means that they haven't posted in a very long time, so their accounts were automatically del-tacoed.

okedokey.

del-tacoed?

How long is "a very long time?"

I didn't come on for yonkie-doodles. Wow I missed this place.

Some people can elect for those things to not show.