The great thing about the EPRIDA model of production is that it DOES NOT take land out of production-- it actually makes the land more productive, by generating carbon negative fertilizer to go along with the biofuels:

http://www.eprida.com/home/index.php4

So, not only do you sequester carbon, you do it in a way that makes the soil more productive, long term, and frees farmers from the need to buy fertilizers generated with fossil fuels. The Amazonians were doing this thing 4000 years ago, just not generating the biofuels along with it.

Yes, terra preta was and is a great method.
A real silver bullet.
I'm quite curious how modern man will screw this one up.

(who, me? negative? naaaaaaaa......)