32 sites which includes 10 language sites, 12 health sites and 10 miscellaneous. A better question might be: "How many sites do you manage properly?" My answer would be 10 or so.
Five 3 at work 2 at home (plus a sub-domain which acts as a separate PR5 directory) Thinking of starting work on a new site or sub-domain soon. Still deciding between around half a dozen "cool" ideas!
You have no idea about what? If you want to learn SEO, maybe you should start reading some SEO threads and stop posting NONSENSE!