A favicon is a graphic icon associated with your Web site. Most browsers display them as a visual reminder of your Web site in the address bar or in favorites tab.

To add a favicon to your Web site, you'll need an icon, you can create one at http://www.favicon.cc, you also need to add a line of code in the head of your web site

The format for the icon must be 16x16 pixels or 32x32 pixels, using either 8-bit or 24-bit.

What may come as a surprise to some webmasters is Microsoft, Yahoo and Google's recent announcement that cross domain content duplication will be allowed. They recognize that there are legitimate reasons to duplicate content across different websites.

For example if you are migrating to a new domain name and using a Web server that cannot perform server-side redirects. To help those webmasters with these types of issues that arise on sites, Google has created the cross-domain link rel="canonical" href="http://www.bluethumb.co.uk tag.

Google recommends following certain guidelines. Such as choosing your preferred domain, when Google is confronted with duplicate content they will generally index just one version and filter the rest out. This allows you to make the decision of which version should be indexed. In addition they recommend that you reduce in-site duplication, by placing the appropriate no index statements.

You should also enable crawling and use 301 (permanent) redirects wherever possible. These type of redirects send visitors and search engine crawlers to your preferred domain and make it extremely clear which URL the search engine should index.

While the canonical link element is seen as a clue and not an absolute statement, Google will try to follow it where possible.