Additionally, any site that renders text will look better. Firefox 17 doesn't render text at the higher DPI supported by new MacBook Pros, causing every site to look blurrier than it would in Chrome or Safari.
For the record, the same is true in Windows: change the scaling factor of the OS, and Firefox simply scales the same low-res text. It's unclear whether the change I mentioned in nightlies will fix Windows as well; I simply haven't tried it yet.
I'm not sure that you understand the point he was making. Yes, the web browser is the one that ultimately displays the image, but you can't magically make a small image look clear when stretched to be larger. The only way to fix that problem is for the web designer to serve higher resolution images. Or better yet, avoid static PNGs and JPGs whenever possible, especially for text.
ActiveSync is available for Outlook 2010 and older as a plugin (called, in traditional MS fashion, the Microsoft Office Outlook Hotmail Connector), and I believe will be built into Outlook 2013 when it comes out. No clue about Mac Outlook though (AFAIK it's not currently supported).
What is research but a blind date with knowledge? -- Will Harvey