Looks like they’re up to 70M users now. Pretty impressive growth for just a few days.
I’ll probably join eventually, but waiting until they offer the ability to prioritize people you follow. That feature is already on Instagram, so I suspect they’re holding off deliberately so people’s feeds are full while the platform ramps up.
I did join for one of my clients. Finding it incredibly boring so far because the feed is the same as the folks my client follows, which is not a lot of accounts and they are related to the client’s business or their friends. If I could join as myself I might find it slightly more interesting, but right now you can only have one account, unlike Instagram. It really does nothing for me right now.