The website itself is very fun. I enjoy making projects in Scratch. I like when people see my projects and follow me. I use Scratch to share stuff with people (mostly projects and comments). However, I don't like the moderation. I was once blocked for 12 hours just for posting the same comment three times, each time on a different account. The Scratch Team will block a project even if it has a very unnoticeable innappropiate thing. I am lucky that I have never been banned, but I have heard stories of scratchers being banned for stupid reasons.
If you create an account to go around a ban, Scratch will track your IP address so that you can't create another Scratch account from your network. I once created a secret account called gy4tt just for fun. However, when I discovered that the Scratch Team can track your IP address, I immediately deleted the gy4tt account, which I created a few days before, because it had a slightly inappropriate name and I feared that the Scratch Team would ban my main account.
Overall, I kinda recommend Scratch, but be very careful.