Apparently in the Tiger release of Mac OS, Safari somehow automatically indicates if a web site has an RSS feed. I don't have access to this version of Safari (stuck on Win2k :-( ) so this information is second hand.
Anyway, the point is, my Drupal-based sites which do provide RSS feeds do not trigger this indicator.
If there is some sort of widespread or semi-standard way for RSS auto-discovery, is that something we should add support for in Drupal?
It seems like it would be useful. Some of my users did not know my site had RSS because their browser was not telling them it did. When I told them directly, they were pleased to take advantage of it.
Drupal already works fine with Safari RSS, all the stuff was in there way before Safari RSS was released.
http://developer.apple.com/internet/safari/faq.html#anchor22
Is the LINK header stuff already in core? I knew it wasn't in 4.5, so I added to my theme. That's what Opera uses for its RSS indicator and probably the same thing used by Firefox.
It was in 4.6 using drupal_set_html_head(), and in head it is done via drupal_add_link(), which in turn calls drupal_set_html_head(). So if your theme gets and outputs drupal_get_html_head(), then it should be OK. Goba