OK, so we've all heard the warning to avoid 'link farms' as a way of increasing page rank. But what about a free web directory? Although no one (except Google themselves) know for sure, I think it's safe to say that directories are a good way to promote your website, especially if you can get into a category with other 'like topic' websites. An good example is www.marketingpatch.com, where you can submit your link free to this PR2 general directory.