Dave Winer over at Scripting.com reminds us of the shortfalls of silos:
If I put stuff in Twitter, the only way to get it out is through a heavily regulated and always-changing API. It will change a lot in the coming months and years. It will certainly narrow more than it expands. I feel very confident in predicting this, because I understand where Twitter is going.
If you put stuff in Facebook, it’s even more silo’d than it is in Twitter.
However, if you put stuff in WordPress, even on wordpress.com, you have full fluidity. You are not silo’d. You can get data in and out using widely-supported APIs that are implemented by Drupal, Tumblr, Posterous, Movable Type, TypePad, etc etc. At least there’s some compatibility. And in a pinch you could probably move your content to a static website and have it be useful.
The ability to get your own news and information without it being filtered by friends, algorithms, and “silos” is critically important in the modern age.
Read it all.