The poor letter-spacing, or more accurately kerning, is that either the fonts in use don't have kerning pairs or they're being ignored, as web browsers seem to do. Printing from another typeface would solve the former, but in my experience (and not thoughtful research), kerning pairs are ignored in every browser. Firefox does give an effort, though, with automatic optical kerning, but it often crashes letters together while leaving too much space between others. It would be interesting to know if that feature translated to print.