This is often a function of Jaws, not the web site. You can take the same
site and listen in Window Eyes and there will be no extra line
spaces. Sometimes, it is the other way around, JFW will have no spaces,
and WE will, however, I have found Jaws far more often adds blank lines to
sites, sometimes a dozen between text or link lines. The site looks normal
to my wife's eyes, so it is definitely a speech issue.