Doesn't matter if you do or you don't. If you were already given the write up, makes no difference if you sign it. It is still valid.
Sign up
Unless your boss agreed to protect your life, then the answer is no. If you are saying that a customer physically attacked you, then legally speaking, your boss shouldn't write you up for using self defense, and should instead take legal action against that customer. If the customer was simply making threats, then your reaction to that is what completely controls what your boss should do. If you threaten back, then yes you should be written up, however if you only acted peacefully, then writing you up is unreasonable.
go an sign up and write youre information
go on to twitter.com (the twitter website) and it should say sign up, click on that and sign up! :)
No, unless you authorize somebody to do it on your behave.
No, a verbal "thank you" is far better, people would only surmise that you are "Sucking up" to the boss if you do this and your boss could find it rather strange also.
To sign up for SeekingArrangement, one can go to their online website to register for an account. Another method is to write a letter to their headquarters.
write them up ... tell your boss.
No. Just dont screw up
Try looking at the bottom of the website, There should be a sign up button somewhere. Also try signing in with a random username and password so on the page that says that you entered the wrong information then there should be a sign up link on that page.
no they should not
You should fail then and leave him busier to do the job alone.