A few rewrite rules

Once upon a long ago it didn't matter whether your site was www.raditha.com or just plain old raditha.com then along came Google Pagerank. Your website being accessible with or without the www could mean that your Pagerank is divided amongst two sites. Even though Google itself advised that website owners shouldn't worry too much about Pagerank, people still did, and Apache Rewrite rules like the ones below came into being: