How to find a market for your weeds?

So, the video at the top of the front page got me thinking. How do you find a market to sell your weeds?
Where I'm from we have Castor Beans everywhere! I'd like to find a way to turn this invasive into a source of income.

How hard would squeezing them for oil be they make a good biosiesel feedstocl

I worked for a year for a company called Eclectic Institute who manufactures tincture and freeze dried.  They are always running crews wildcrafting and looking for sources of material, or trying to grow it themselves.  Look at the shelf of a medicinal herb shop and contact manufacturers.  More labor intensive would be to identify retailers and do the value added part yourself.

Hah you don't want to use castor bean to feed anything. Ricin is probably the LSD of poison.

insipid, I read the suggestion as for biodiesel feedstock. That's not literally food for anything, except cars and other machines. I don't personally know of castor bean's usefulness in biodiesel, but it seems like a good avenue to research.

As to ricin being the LSD of poison, I'm not sure what you mean by that. Is it a synthetic hallucinogen that people in law enforcement get overly excited about?

I've been working on a project that I call the sustainable wildcrafters network, for people to sell their weeds, their regeneratively-gathered wild medicinals, and their managed invasive medicinals directly to users. I need a few more people to express interest so I have motivation to actually finish the site. If you'd be interested in joining the network and testing it and giving me feedback, please send me a private message.

I believe the brand Castrol oil comes originaly from the use of Castor.Ive heard it can be used as a 2cycle mix.