1) The name. It is stupid. Plurk is awesome.

2) When you tell someone that you posted something on Twitter what do you tell them? I Twittered or Tweeted?

With Plurk you lust say: I Plurked!

3) It is much harder to respond to specific posts.

4) Much less customization. You can pick a design and change the colors. That's it.

No totally awesome CSS codes.

Add on if you think of anything.