After the last post in the product blog, I played with footnotes one more time.
But they still seem broken.
Everything after the ID of the first footnote (<a id="fn1" />) acts like a link, although it shouldn’t AFAIK.

I think this is a spacing issue—I created a writeboard by typing the following:

and it worked just fine.

However, if the whitespace is changed just a bit, to this:

fn1.this is the test itself.

or if there is no blank line prior to the line beginning fn1. , it doesn’t work.

Textile seems to be very touchy about whitespace.

Note that this is done entirely w/textile, no need to manually enter the html anchor tag—putting a line like this

automatically creates the following text as an active link with fn2 as its id:

² here’s another note

(the anchor tag won’t show up if you view source in the forums, but it works in BP pages and on writeboards)