From what I've seen, the internet is not a very good place to find programmers, especially if you're looking for them to work for nothing. But it sounds like you perhaps just need a programming task to be done (like making a specific game based on your art), rather than needing to actually form a group. You might try the following:
If you have a single specific task that needs to be done, you can post it on vWorker (previously Rent-A-Coder) and programmers (or programming groups) will bid on your project; accept the most viable-looking bidder, they do the work, and then you pay them once you receive the work. It's well-made to keep both sides fair; for example, your money goes into escrow, so that any foul play on your part and the programmer still gets paid; but any foul play on the programmer's part and the money comes back to you. Communications should be done through the website so that everything is documented, and their moderators are pretty quick at resolving issues, should you need them.
There are many "outsource" workers and groups who will do your task for very cheap and quickly, but watch out for bad quality code. Also make sure to have crystal-clear requirements, and document everything through the website. Anything said on there is like a contract, and if you put complete requirements up there, the coder will be required to complete them before they get paid. Conversely, the programmers NEED a clear specification of what needs to be done in order to accurately bid and estimate their time, and poor requirements are often the source of buyers taking advantage of coders, making them work extra before they get paid just because there was a misunderstanding.
I've had both good and bad experiences as a coder on the site, but it seems to me that buyers are treated very well; they are certainly in the position of power. Again, if you have a very clear idea of what needs to be done and you post all of your requirements upfront, you won't have any problems; coders will complete your task as you ask for it, or they don't get paid and you just try again.