The screen may have a coarse mesh, but is that any reason not to put it in place? Even if midges get through, at least we won't be bothered by horseflies. As for claims of conpyright infringement, all R. has to say is that they won't provide a link to item x because they are "concerned about possible copyright issues" - as a private site they aren't obliged to carry anything anyone puts up. They could also pass the link on to the putative owner, and no doubt be called stoolies.