Google has issued a short guide for SEO and webmasters to what is allowed under their terms for webserving techniques, and also how to get premium or paid content listed in the search engines without giving everything away for free.
Certain techniques such as geolocation use the IP address or information in a cookie to serve content relevant to the user’s location. You see this with Google search, when you will generally be taken to the Google country site that fits with your current location or information from your Google account.
Additionally, this guide covers how to get premium and paid subscription content indexed under their new First Click free policy. This is very useful if you have a member only site and have been struggling to get listed under keywords which will attract new members.
However, this guide is also worth reading for anyone thinking about trying a certain ‘black hat’ technique: trying to con GoogleBot. In this instance by serving content specifically search engine optimised for the spider, and different to that which normal site visitors see. Trying to spam the search engine in the past has resulted in advanced SEO techniques being developed but it is also a risky business that can have disastrous results, occasionally long-term. There is a clear warning to check the webmaster guidelines before trying this.
We will talk about other blackhat techniques that may get you penalised in future blog posts.