I wish more than anything you would remove the checkmark from "Keep me signed in" as a default.
It's really offensive that you think people want to stay logged into this site. Why not leave it blank and leave it up to us, your users, to decide this for ourselves. It's rude and patronising. And so annoying that every single time I log in I have to uncheck the box and it doesn't stay that way.

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Wolf Standish commented
Your system logs me in every night while I am asleep and have already assured that I manually logged out. This is a violation of my rights and I will be forwarding the information to my attorney if it keeps happening.
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Wolf Standish commented
Stop logging me in when I am not using Yahoo and have deliberately logged out because un checking the box that says "keep me logged in" doe's nothing anymore. you are criminals and I will! call my attorney if this persists.