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The bull has retired. The magic hat is the mascot now: it sits on the right toolbar, tips forward when you open a chart tab and gives a little squash when you close one. It only moves for that moment and costs nothing while it rests.
Once you are signed in, the header keeps one button for you: your avatar slot, your full nick and a small caret, in the space the gear used to take. It opens Settings on the Account tab. The gear is back next to Sign in whenever you are signed out. The Account tab always shows your tier and role.
On the server, every request has a time limit, every address gets a fair share of calls, and every piece of text you send is trimmed, normalized and bounded before it is stored, whether it is a share title, a forum post or a device name. Unknown addresses answer the same empty reply everywhere, so nothing about the service can be mapped by guessing.