I wonder why they didn’t archive the most relevant tweets only. A library keeps only a subset of all available books in its archive as well.
Edit:
From the article, there are copyright issues when archiving tweets. The people tweeting own their tweets. So the archive doesn’t want to expose itself to that risk.
Edit:
From the article, there are copyright issues when archiving tweets. The people tweeting own their tweets. So the archive doesn’t want to expose itself to that risk.