I posted the first chapter of my crime thriller novel for critique in an earlier post -- and found the feedback from fellow authors fantastic.
People left detailed comments and even bothered to rewrite some scenes to show me, rather than tell me, their suggestions.
I tried writer groups in the past - online and offline - and found them largely a monumental waste of time.
But this platform is different - you're all here (of widely different experience) for the same thing: to improve your writing.
I love it and expect to be knocking around here for a long time.