Fair enough. I guess that’s a kind of reason. I’d be satisfied with a reason if it specified how it had been outcompeted, and speaking personally from somebody who lived through the era it was kind of clunky and at least when I used it there was no notion of ‘networks’ (that Facebook initially had, and then retired probably more than a decade ago) or ‘groups’ — I have memories of user accounts named after organisations or common interests with lots of ‘friends’ linking to them… and also the notion of user ‘walls’ and status updates was very embryonic. My girlfriend at the time was utterly engrossed but really it failed to draw me in. Facebook a few years later however was like a syringe of blue dopamine straight to the brain.