I joined the site on the 27th February 2007 (it launched in March 2006), which seems a scary long time ago in the web, and so I was hunting around for a review of the site when it first launched. This post from Techcrunch is pretty interesting to read — here are a few quotes from the article:
I imagine most users are not going to want to have all of their Twttr messages published on a public website.
If this was a new startup, a one or two person shop, I’d give it a thumbs up for innovation and good execution on a simple but viral idea.
Now, it has over 200 million registered accounts, with over 1 billion tweets posted every week, and whilst it first promoted itself as an SMS-based update of course the rise of the smartphone has meant that much more could be achieved on the go, but its focus from the very start has remained of realtime status updates, wherever you are.