The beauty of a site like CGOAB or CycleBlaze is that any day of the trip can be quickly referenced in the future if that is the way it was posted originally. Several times here on BF I've linked back to specific days of our 2009 TransAm tour posted at CGOAB. A member kept an excellent journal with photos organized by the day.
Facebook? On an active page all posts will quickly disappear off the bottom into oblivion. Want to return to day 50 of a 93 day tour? Scroll, scroll, scroll, scroll, scroll ........!
Instagram? I couldn't view mev's example above without joining.