Thanks for the info everyone. I was clueless as to who to ask, and I knew someone here would. My main concern was with the google and yahoo logins, but I suppose the worst thing that could happen is someone could pose on this site as someone else for a brief time if I'm understanding correctly?
There are a lot of sites not accepting https connections right now. I had trouble getting my package manager to work yesterday. Also, I can't tell about my bank right now because they've taken a sledgehammer approach to blocking outside connections. I just wonder how much it will impact companies that rarely update software anyway.
It's hard to explain to family members that you should change your passwords, but you can't change it now on many websites.