Ye Olde
Guestbook
I cut my teeth on the internet in the days of Angelfire. There was no comments section. There was no algorithmic feed of user activity. There was no way of knowing who (if anybody) was reading your site. It was chaos, and we loved it!
Then, the humble guestbook showed up in our lives, and changed everything. Your readers (or, more likely, haters and trolls) could leave messages on your site. Publicly available for all to see! It was the dawn of a new era.
Today, we recreate that magic.