Gee, I was really hoping that you would call him for us.

J/k
Seriously, the best way is
not to start a thread about someone since this can lead to them responding in a negative way and then the flaming starts. That's why I would suggest another way, like sending a PM to a mod or asking how big a sig can be.
Anyway, the sig is an appropriate place for a small ad for your business or whatever as long as it abides by the rules and does not become a billboard. You might notice that there are some billboards, I mean sigs, that are huge and only contain the user's pc info.
We have been talking about sigs and what is allowed and not allowed. It is noticed.
Dave