does it mean that vice versa [update] does also [vote] ?

(I can't test cause I already voted at all replies)

> there may be an interesting longer answer

indeed this must be a very interesting longer answer =)

> only if you have edit rights to that post

actually this must be tested somewhere and this should be the place to also check the value of sexisgood

<input name="sexisgood" value="update" type="submit">

<input name="sexisgreat" value="vote!" type="submit">

though everything is possible in legacy code... ;-)