It is not (just) for narcissism: it can fill a niche similar to RSS. When I was using Twitter, 90% of the posts I read were from companies or projects announcing news and updates. It also had a built in comments, so you have a single, shared discussion/q&a space in the same app.
Obviously, the biggest advantage it has over RSS (and Mastodon, so far) is critical mass. More creators have Twitter accounts than RSS feeds and for those that have both, the Twitter account is always more active.
It is not (just) for narcissism: it can fill a niche similar to RSS. When I was using Twitter, 90% of the posts I read were from companies or projects announcing news and updates. It also had a built in comments, so you have a single, shared discussion/q&a space in the same app.
Obviously, the biggest advantage it has over RSS (and Mastodon, so far) is critical mass. More creators have Twitter accounts than RSS feeds and for those that have both, the Twitter account is always more active.