Tweetie 2 and Twitterrific 2 aren't just two of the best Twitter clients for the iPhone, they're two of the best mobile micro-blogging interfaces on the planet and now both WordPress and Tumblr are taking advantage of them -- which is ridiculously awesome for iPhone users.

WordPress now lets you "Post and Read via Twitter API", and they have a complete walkthrough posted on how to set it up.

We’ve enabled posting to and reading of WordPress.com blogs via the Twitter API. Any app that allows you to set a custom API URL will work. This project came out of our Quebec meetup and was developed by Team 55 (Andy, Terry, and Raphael).

Inspired by WordPress, Tumblr has also jumped on board:

The really cool thing - because our following models follow a lot of the same principles, we’ve been able to take advantage of a ton of native features:

  • Retweeting = Reblogging
  • Replying = Reblogging w/ commentary
  • Favoriting = Liking
  • “@david” = ”http://david.tumblr.com/”
  • Conversations = Reblogs

So if you use Tweetie or Twitterrific, and WordPress or Tumblr, the API elves have given you an early present. Let us know how well it works for you.