I've done a fair amount of searching and can't find a straight answer anywhere.
The account verification process tells you everything. Platforms that skip it are the ones you'll regret spending time on.
The free tiers on most of what I've tried are basically useless — you get just enough to see real people are there, then hit a wall the moment you try to message anyone.
Looking for real opinions here, not just the same recycled top-ten list.