One of the significant features of Safari 5 is its provision for third-party extensions that add or change functionality. We know Apple is planning a gallery of selected extensions, but not what the criteria for inclusion will be other than "an innovative user experience".

I'm not totally convinced. The browser I currently use most is Camino (Safari isn't completely compatible with an online application that I have to use), which doesn't have extensions and I can't say I miss them.

I've only been inclined to install a few Firefox extensions, and I could live without them. For example, AutoPager automatically loads follow-on pages (eg, from Google or news sites that split articles across multiple pages), and iViewFox is the most convenient tool I've found so far to download ABC programs for offline viewing. Both are handy, but not essential.

I know NoScript has a lot of fans, but given my limited use of Firefox I'm not sure that it's worth bothering with. If there was an equivalent for Safari or Camino, I'd probably install it - so if you know of one, please leave a comment.

Anyway, I won't be rushing out to load up Safari with dozens of extensions - will you?