Twitter: Five predictions for 2013

It's been a tumultuous year for Twitter, with the microblogging giant becoming more mainstream than ever, and a bitter feud over photo-sharing with Instagram. Will 2013 be smoother?
1. Releasing everyone's full tweet histories 
2. Out-Instagramming Instagram 
3. Becoming more of a financial powerhouse 
4. Mending fences with developers 
5. Getting bought by Apple. Or not.