I don’t use Twitter, but if I did, I would certainly want to archive the content of my timeline so I could refer back to it for journalistic reasons, perhaps, via a browser extension? No reason to lock down my “ownership” here, because it’d only be public posts. There are obvious fair use reasons for when I want to quote someone when I do acts of journalism. I’d even be willing to share my archive with anyone else, and advertise the tweet_ids I have in case another journalist wanted them. Sort of like… I dunno, napster? That’d be great.