BuddyPress.org

Hi all,
I spent some time yesterday playing with YSlow and Pagespeed and a bunch of options to get my site loading faster and I thought I’d share and ask others for their experience/thoughts.
These are the things I am trying out:

* FV Gravatar Cache (plugin)
* WP Minify (plugin)
* Using dropbox as a CDN http://bp-tricks.com/featured/dropbox-cdn-host-buddypress-wordpress-theme/ (for now until I set up a ‘proper’ CDN)

Pagespeed also suggests browser caching, I know that some caching tools can cause issues with buddypress, does anyone have any suggestions of the best settings or a walkthrough for this?
Cheers