Foreshortened

Waaaah!?!?! They had the best solution in the world for content tracking and deduplicating (so fair enough, they consumed vastly more resources in serving Reader than any RSS competitor…). Every time something was reblogged or reposted or copied, they’d manage to link it to the original post in a rather awesome way. I used to use their API to get a persistent ID for a post, knowing that their reference to the content was probably the most canonical of any on the web! Sad times.