There is an other interesting place on the Internet: The Way Back Machine can be found on:
Behind this simple URL there is a world open for you. Believe it or not: The whole Internet is being archived for you. Not the smal websites that stay in the air for onlyu a few months, but the larger ones. When your blog gets larger, it will be picked up and archived. Every update is registered, and even better, the complete website can be found back in the form it once used to be. If you have a website that is a bit longer in the air, you will be surprised. If the website is now gone (e.g. the contract with the provider is cancelled and the website is deleted), you can still find these older versions of websites through this large undertaking.