- Emoticons. Twitter doesn't support native emoticons, unless your Twitter application adds it. In Plurk, you gained emoticons through Karma which should grow if you plurk regularly (it can drop too if you post too much or if you leave your Plurk account more than one day).
- Real time updates and timeline-based. Plurk has integrated real time updates by using Comet infrastructure and you will other's comment on your account popping up as soon as they press enter on their screen.
Plurk may not be as popular as in Twitter, but for me, i think it's still the best social site.