Marcin Wichary, writing about Flickr’s beautiful URL scheme:
It was a beautiful and predictable scheme. Once you knew how it worked, you could guess other URLs.
The del.icio.us and Flickr APIs and URL schemes were appropriately lauded as clean, predictable, and best-in-class.
This sort of predictability isn’t seen as often these days, especially by the behemoth platforms running on top of terrible frameworks.
Mastodon, however, has some nice URLs.