This is a very useful service, actually:

Marc Andreessen’s tweets as blog posts. Because sometimes Andreessen tweets a LOT. 

Line breaks and limited formatting added for readability. Not affiliated with Marc Andreessen. Follow him on Twitter at @pmarca; read his blog at http://blog.pmarca.com or past writings at the unofficial blog http://pmarchive.com/

A few good ones:

Every CEO needs great general counsel: http://pmarcatweetsasblogposts.tumblr.com/day/2014/02/06

8 business models for news - http://pmarcatweetsasblogposts.tumblr.com/day/2014/02/05

Currency is gross: http://pmarcatweetsasblogposts.tumblr.com/day/2014/02/02

Rules: http://pmarcatweetsasblogposts.tumblr.com/day/2014/01/20

"NSA is Evil" is simplified and unfair: http://pmarcatweetsasblogposts.tumblr.com/day/2014/01/17

Why Exec compensation is high: http://pmarcatweetsasblogposts.tumblr.com/day/2014/01/18

Design to control with smartphones: http://pmarcatweetsasblogposts.tumblr.com/day/2014/01/12

Praising Twitter: http://pmarcatweetsasblogposts.tumblr.com/day/2014/01/03

Redefining the A round: http://pmarcatweetsasblogposts.tumblr.com/day/2014/02/01