When I first started using Livejournal I always treated it as a business that had invested in online blogging. Recent decisions though make it seem like LJ wants to shut down. Regardless of what type of revenue advertising on the site may bring its the users that get paid accounts that keep LJ afloat,especially with amount on account on the site and then actual active members.
What exactly is Twitter. I keep hearing about it but never really checked out the site.