I made a little hack for wordpress that lets you run a wordpress blog and have a shared security question that lets people access content. A simple question like "What is the name of the family dog?" or "What is grandpa's nickname?", something like that. Not industrial strength security, but enough to keep it sorta private and out of search.
The nifty part is that with wordpress and Jetpack, people can sign up for posts by email, so every time you post, your friends/family can get an email with the updates. No need to even visit the blog. Perfect for grandma.
Here's the two files that make it work, in case anyone is interested: https://gist.github.com/justinph/f0fb937d1ee418a45bfb85e91e4...