100% agree with argothiusz...I have 3 websites that have PR 0 but having good rank in few competitive keywords...
is that pr0 is dropped when google update? because I see domains with high backlink and establish with pr6 dropped to pr0, it's so grievous...
Late night (July 25, 2008 Dallas TX time(CST)), Google did their PR update that everyone has been waiting for. And most site appear to have gone down by a point. My site went from a PR4 to a PR3 (Yuk) and but my rankings went up accross the board. This update has major changes to the Google software. A PR3 site can beats a PR6 site for a Keyword phrase (Humm!). Stay tuned...
PR 0 is for new sites..... It has been elaborated above...... Learn SEO ( i offer SEO services, check my signature )