The internet has a reputation for being both transient and anonymous. However this is far from true. Blogs and websites may well come and go but sites such as the Wayback Machine contain a wealth of archived information and content. Tools such as Cache View can be extremely useful in finding deleted or amended posts on sites and forums. It is also not especially difficult to discover the true identity of internet personalities and popular bloggers. Don't believe me? Type your own real name in to Google and see what comes up. I think you'll be surprised by the results.