Print » PDF » Save as PDF yielded a file 60MB in size, and after several lengthy operations, the best Acrobat could squeeze it down to was 3MB. Using Print » PDF » Save PDF as PostScript produced a 48MB PS file. From this, Preview generated a 75MB file, but Acrobat produced a file of just 1.2MB, before optimisation. Selecting File » Reduce File Size brought this down further to 900KB, with no discernible loss of quality in photos or graphics.
I'm sure this is common knowledge to those who do this kind of thing on a daily basis, but for those who don't, it may be useful. I really like using Pages to produce high quality documents, but the problem comes when sharing them with Windows users, and PDF is obviously ideal for this. It's just a shame Pages can't deliver a compact file itself.

