On the benefits of window-walled gardens

This feels like a wpmu.org post coming on soon too - but has anyone noticed how we're frequently seeing more posts here per 24 hours than on the official mu forums... not all the time, by any means, but quite often.

I'm wondering if the barrier to entry approach is helping this (i.e. ramping up quality = more participation)? Whaddya reckon?

(also, we do need - and are working on - improving the quality of the instructional materials that come with each plugin... so maybe that'll decrease the volume a bit too