It's a downside of using your email and password to log into sites - and obviously spacelocker does this deliberately given the number of complaints you can find on the net and their unwillingness to make their sign up clearer (or separate). Being a bit lazy, if it's a trusted site, I'm almost afraid to admit I've done it myself since it's convenient - I use my email and password to log into HN.
It's a downside of using your email and password to log into sites - and obviously spacelocker does this deliberately given the number of complaints you can find on the net and their unwillingness to make their sign up clearer (or separate). Being a bit lazy, if it's a trusted site, I'm almost afraid to admit I've done it myself since it's convenient - I use my email and password to log into HN.