Comment 8 for bug 58511

Btw, this site seems to overwrite the fonts used, so the settings have no effect unless you disable "Allow web page to overwrite fonts" or something like this in firefox fonts preference.
After disabling it, (and setting Proportional to Sans Serif instead of Serif, and decreasing size from 16 to 14), it looks nicer to me.
I'm not sure which fonts this page use by default (the M is quite weird), and why it has changed.

Also, I don't know why, but I find that Helvetica looks less nice in some cases, like for this page on my current system, where it looks slightly bold. In this case, I prefer ms fonts like Arial or Verdana (these guys at least got one thing right...)