a poster on kuro5hin complains about the unwanted mail solicitations generated by donating to charity. it’s easy enough to see that the charities are not losing money at this by looking at reports from sites like the better business bureau’s give.org, but it can be frustrating to get off the list of some charities, usually the larger ones. the problem could be that it is cheaper, in the short term, to just keep sending you solicitations than deal with pruning the mailing list.