The issue of "end-user agreements" discussed under the link below* is one thing, one important thing, but the problem that has me troubled is the ongoing seed (for re-seeding) issue.
The GM seed is bought, the (bumper?) crop harvested, but can the seed from that crop be planted to become next season's crop, and so on?
On the face of it this seems unlikely as GM-ing would then be a one-off event.
So...
The first (maybe even the second too) time you purchase your GM seed, it is reasonably cheap.
BUT!!!
Say the yields are good and the profits too.
Is the GM supplier going to be happy leaving the farmer with the 'extra' profit and the market (you and me) better off?
While, PaulB, I can see that there IS money in GM I cannot see the farmers and the consumers of India and Africa getting any portion of benefit whatsoever.
Like Green solutions, this is the answer ONLY to the prayers of big-business.
*That link...
http://www.scientificamerican.com/article.cfm?id=do-seed-companies-control-gm-crop-research