I've used superscripts as footnote references a few times (e.g., my answer in [...close-vim-from-the-command-line][1] ) . 

Is it possible to link these so that they jump down to the appropriate place (such as the bottom/foot of the answer) when clicked on? 

This is probably overkill, as answers are not usually so long that they aren't visually scan-able.  But this is the only case so far in which I've missed wikipedia's markup features.

  [1]: http://askubuntu.com/questions/24406/how-to-close-vim-from-the-command-line