Twitter Blackbird Pie (http://media.twitter.com/blackbird-pie/) allows you to generate and embed HTML code that represents a tweet. Add awesome looking embedded HTML representations of actual tweets in your blog posts just by adding simple shortcodes. Yes. Just a snippet of code you’ll be able to use to generate simple, selectable flat-HTML tweets like the one i used here.

http://twitter.com/valentmustamin/status/14400084036

[blackbirdpie url="http://twitter.com/valentmustamin/status/14400084036"]

Download the plugin for WordPress and add tweet visualizations to your site as can be found at http://media.twitter.com/blackbird-pie/.

afaik, this Twitter Blackbird Pie feature, doesn’t work on Tumblr.