Bobby, Robby, Bobert or whoever you are.  You can logon from as many different computers as you want to.  You will still be logged in on all of them.  You logon is stored in a cookie.  That cookie expires about every 60 days.  When it expires you will have to logon again.  But there is no limit to the number of computers you can logon from.

If you register now you must give a valid email address because we send you an email with a very top secret validation code and link in it.  Without that code and link you cannot complete your registration.  We did not do this at first, but were forced to take up this practice so thwart nasty little spam bots.  You must have registered with your old email before we started that practice.