Vocalizr

Vocalizr has gotten so bad over the past few years. I remember me and my friends being able to freely search and talk to people with no extra charge; those days are long gone. Now they lure you in for free and then CONSTANTLY try to upsell you their premium plans.

Here's how my experience went:
I need a vocalist on a song.
I try to search for a vocalist, I can't because I'm not giving them money.
I make a gig instead.
People bid.
I message said people, I get ghosted 3/4 of the time.
I try to message more than five people, I can't because I'm not giving them money. Now I'm also letting down people who have made bids.
I try to at least connect with people so I can message them. I've reached my monthly limit and now I can't even do that because THEY WANT MY MONEY!

It's so ridiculous, they are more or less the only service (in my experience) that does things this way.
I recommend using SoundBetter, I've been using it for a while and to my knowledge it is completely free if you are a client (meaning you are the one requesting services).