I visited Inworldz recently, for a Commercial grid that's been around so long I found it laggy despite there being few avatars present and those that were mainly were Inworldz Mentors.
All the avatars with the exception of one female called Zip? looked terrible, I kind of felt sorry for them, the freebie shop was okay but offered very low quality freebies, probably why almost all were kitted out like vagrants.
As regards Physics, I don't know what's going on there because my avatar was jumping up and down like a yo yo at times and on a couple of occasions even started sinking through the ground.
All in all cannot say I was that impressed Jim.