I have a two month old site which was initally ranking on page 5 for a keyword (not a hugely competitive term) but soon fell to page 12. I've been building some high PR links to try and move it but to no avail. Then I had a look at www2.sandbox.google.com/ (caffeine) and the site is ranking at number 5. I know it's early days yet but could caffeine be an update that actually benefits new sites? Or does anyone have another explanation?