After learning that corporations actually listen to tweets and blog posts... here is a suggestion for Indium corporation, and any others that make lead-free solder.
Those of us who are electronics hobbyists will hang on to our stocks of lead-tin solder for a very long time, unless we are given a reason to switch. Perhaps someone who makes a lead-free solder might offer a trade-in program as an incentive? Either outright swap if the economics are right (I have no idea how much indium costs)... or some discount.
Samples would be ok as well, of course.