When you share a Mahara page with Facebook, it may not pick up the logo but choose another image from the site. In order to tell FB which image should be used, the following could be implemented in the raw theme so that all pages get it:
https://developers.facebook.com/docs/share/
E.g. When you share the Mahara homepage (tested it with demo.mahara.org), you don't get the logo but other images that are on the page. If you share a link to a portfolio page, there is no logo and no information about the site but "Your browser does not have javascript enabled for this site. Mahara requires javascript to be enabled before you can log in".
If the following would be possible that would be great:
1. Always show the Mahara logo -> set that as the image to be used by Facebook. If other sites want to use a different image, they could exchange that in the raw theme, but at least we would have a default logo.
2. Check (and fix) what / where a short description of a site would need tobe put into the header so that it is picked up by Facebook even when sharing a portfolio page.
The Share button has bee desprecated in flavour of Like button. I suggest we customize Mahara for this
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