I did a mistake and have just noticed it. A really big mistake for this blog. Before today, this blog’s permalink was the default permalink (something like this – http://dikelantan.com/?p=123). So today this blog permalink has been changed to a better permalink, that is a custome structure “/%category%/%postname%/”. I know this will effect a lot for this blog, but sometimes we have no choice. To be a good ‘friend’ for the search engine, this new permalink will help me a lot.