You'll find no end of SEO advice on the web. But a lot of it's out of date. Google are forever tinkering with their search algorithms and tactics that worked 5 years (or 5 months) ago could now land your site in hot water.

To help you navigate the ins and outs of sustainable SEO, we've compiled a short list of 6 tactics you definitely shouldn't try. To be clear, they used to work once, but they now do more harm than good.