Page Layout ⇒ Spacing between Footnote and Footnote Rule

[cgnieder]

but I'm using hyperref alot with url links in footnotes. I haven't tested your solution to my whole book yet, and I'm afraid it would give a lot of troubles.

No, I don't think so. What isn't linked any more are the footnote marks. urls should still work.

And what is the parameter to place all the footnotes at the bottom of the page ? The documentation isn't clear about that.

I don't know, maybe there is none. But it is very well possible that »footmisc« and »bigfoot« are compatible in that aspect, I haven't tried.

Regards