Today I have migrated my blog from Joomla to WordPress. Why I have done so, I will write later on. But I am happy that this migration was automatic because of one person AZEEM KHAN. He has developed a good script for this purpose, you can found it here –
http://azeemkhan.info/2008/joomla2wordpress-import-wizard-v3/
Although this was not his original idea, you can found the details at the above link.
Thanks Azeem.