NILI, I deal with artists all the time (you have seen my projects). If you're an artist, deal in ART!!! People don't care a rat's ass about coins unless they can mine or profit on them. People want something they can hold and look at! Create ART!! Sell ART!! You can give someone 1000 Coke Coins, if they can't do something with them they are useless!!
I'd be very interested in seeing some of those projects and hearing about the circles you're in. Here's a bit of what I do...
http://www.viewbug.com/member/AtomicNixonhttps://www.flickr.com/photos/7657010@N05/Most of my work in the past five years was conceptual. for example I had a twitter account @whatar in 2009 that was all an art work and was deleted after 6 month as part of the concept. I did many project there which are gone forever. Some you can find by googling my account.
But let my post here two images for another twitter project I did. I went to gallery openings in Chelsea and took photos of the art with the crowed. each show made me create a different king of work according to the artwork there. I have twitted these photos on real time which was the important aspect of the work. you can see some of it here
http://twitpic.com/1fvbz1 http://twitpic.com/1fv9v1 Much of the work that I do is not for sell it is who I am, it is my life,
and this coin project is a part of it. I dont keep a website in which I present all my work
a few more pieces of the appropriation art project on twitte http://twitpic.com/1gaptg