Looks like devshare.org has developed another great application for iPhone Users as well as blog owners, I am referring to Comment Push iPhone application which aim to give notitification anytime there is new comment in a blog.
For me I am monitoring comments in my blog thru e-mail notification, where I set up my blog to send notice to my e-mail whenever there are new comments to moderate or respond. The application only supports wordpress.org blog ( Self Hosted Blogs ) , Comment Push is currently free in the app store (note: iTunes link) .
The application will not be able to open up the official WordPress iPhone app but instead launches you within Comment Push itself, who gives you the option to visit your blog in Safari. ( by Blog Herald )
So I believe this applicatyion is very useful for bloggers on the go.