We know where these Census time capsules are, we know when they're about to be opened, and we know how to peek inside and find data treasures that will help us piece together details of our family from years past.
I've come to think of a genealogy blog as another kind of family time capsule. I post names, photos, queries, comments about my family tree and--if Google never removes the blog or the links--they'll be here for decades or longer, waiting for some future researcher or distant relative to search out and read. As long as search engines can locate my blog's entries in the ever-expanding galaxy of web stuff, future members of my family will be able to see what I've posted.
My blog isn't as well organized as the Census, and I'm careful to protect the privacy of living people, but still it can be viewed as a kind of time capsule about my family.
Here's my concern: not all time capsules are found.
From time to time, I read in news reports about time capsules that come to light accidentally--maybe buried at the start of some monument's construction and then found 52 or 78 years later during renovation. Or a school asks children to bring everyday items and notes to class for a time capsule burial set into a new building's cornerstone or at a new sports field's dedication. Too often the markers fade or aren't even set up to let future generations know of the treasures buried in the time capsule.
I deliberately include the surnames of ancestors and relatives I'm researching in the hope that these serve as markers to guide people to my blog.* But will my blog and the thousands like it be gone some day? If there are no new entries for 25 years, will a search engine able to find my blog when someone two generations from now wants to research the same surnames?
How can we, as family researchers, ensure that our genealogy blogs--the ones we use to describe family trees, discuss our ancestors, display old photos, and reach out to long-lost cousins--live on? How can we be sure that our genealogy blogs will be treated as family time capsules that can be found many years in the future?
2022 update: I'm posting ancestor photos and bios and broader family histories on websites where future genealogists are likely to search, such as Family Search. In some cases, I'm embedding links to my blog.
*Also I added ancestor landing pages as tabs across the top of my blog, to capture attention and bring visitors to a summary page about each surname or family.
LOCKSS is the theory: Lots of copies keeps stuff safe!