I found this wonderful web tool that provides service of converting the blogs to podcast. Now readers of my blog have an option to listen to my blog.
Odiogo (http://www.odiogo.com/) is compatible with all blog engines that publish RSS feeds such as Typepad, Blogger, WordPress or Overblog. The generated MP3 files are stored on their servers. Weblog owner does not need to worry about technical integration tasks or bandwidth.
Not only is Odiogo free, it may be able to generate advertising revenues. Once your listenership reaches a significant level, you may qualify for a share of ad income!