I really like PR agency Porter Novelli’s blog which is, in their words, "a simple introduction to Online Public Relations". It’s neat and I think clients would find it very useful. But it seems odd that there is no link to it from their main website. Surely the whole point of a blog like that is to mark you out as experts in a particular field; if potential customers are visiting your website and leaving without ever knowing you have a blog then surely it’s a wasted opportunity?