You can now take extra precaution against hackers and snoops by enabling SSL security on your Tumblr Dashboard. Just head over to your Account Settings and flip the switch.
"Any reason I shouldn’t do this?" Nope, not really. It doesn’t change anything about the dashboard, it just encrypts your connection to it. We’ve been using it for weeks and haven’t even noticed. So, yeah, turn it on and forget about it. Easy.