I use them in my blog all the time. I’m using word press, so it may not work, but the html is:

for the superscript:

[sup]a href=”#footnote1″[1]/a][/sup]

and for the note on the bottom:

[hr/]
[p class=”footnote”][strong][a title=”footnote1″ name=”footnote1″][/a]1[/strong]

The [hr/] tag is for the line at the bottom, and obviously the “1” and such change for successive footnotes. As I said, just about every entry has a few.

However, in order to get it to work, each of the brackets []needs to become an arrow<, facing in around the code, like this: < >. I keep it in a text document and cut and paste.