Looking at this answer, it says the recommended method of installing Gnome Shell is installing Ubuntu Gnome (added a while ago in this edit, the 'recommended' bit seems to have been added in this edit )
This is silly, as if you already have Ubuntu installed, why do you need a new and/or separate Ubuntu install just for a desktop? I have Gnome 3, Unity, Xfce and LXDE on one Ubuntu install and it works fine (occasional silliness with screensavers, but easy enough to rectify)
This may be part of the cause of confusion in this question, unless it is recommended elsewhere.
Also, wouldn't it be better to just install
Basically, should I edit it to say 'run
apt-get install gnome-shell or look at this question' as the best way to install (I think it is if an install already exists, downloading another thing and installing that over it would be weird), or is it right to leave it as what it vaguely says which is 'reinstall to this instead' (a few other edits could be done anyway)
(or look at this question's title)