Feedback from our members...
Modelfolio is a friendly site, everyone gets on well. Models I’ve worked with have been good , like most model/photographer site the number of busy/active members does vary a bit with geography.
I’ve been a professional model on Modelfolio since 2014 and it’s a great site for finding photographers to work with. I especially like their messaging system in that you can save a message as a draft - if/when you’re not quite ready to send yet.