Ask yourself:
Do most of your readers access your blog through an RSS feed reader? (Which means they never see what your site looks like anyway)
Do you have enough iPhone traffic to justify it? (Many web analytics providers nowdays can tell you mobile device stats)

If you’re on wordpress.com (like me) it is done automatically. You just can’t make it look pretty.

Otherwise, if you have your own wordpress installation you can install the WPTouch plugin (http://www.bravenewcode.com/products/wptouch-pro/) and it will automatically display things in an iPhone friendly way. They have a pro version that lets you theme for the iPhone as well.

You may want to try iWPhone (http://iwphone.contentrobot.com/).

You could also write your own theme (or have one created for you) that is able to target iPhone or desktop users differently. Without going into technical details, this should be quite straight forward for a web designer or developer.

Cheers,
Scott

Thanks for the comment. I know there are some good ones – and in fact, I use one on my WordPress sites, but I might hand it over to Scott since he is the expert in this department.

Nick

Do you guys have any suggestions on good WordPress plugins that make your site appear differently on a mobile device?

Are they free to do?

Thanks, Shell.