I wish to add a google+, facebook like, and tweet me button to various pages of my site.
What is the best way to do such a thing?
The best way depends..
If someone had written a plugin for ikiwiki, that would be the best way, but while it has one for flatter it doesn't have ones for these others.
If you want to put it on every page, edit page.tmpl and insert whatever html you like into there. This is also
Or, you can add a template to your site, and put the stuff in there. Then
use the template directive to include it into whatever pages you like. (Something like: [[!template id=bling]])
But on pages with the htmlscrubber enabled, the template content will be subjected to sanitization.