There is a great article on RSS Mobile and reading blogs on a PDA (http://webworkerdaily.com/2007/03/20/rss-on-the-go-a-look-at-web-based-mobile-aggregators/) going around.  I think the article is well written and general a great read!

Essentially, the writer argues that these apps should be web based so that there are no applications needed to install.  I have a few issues with this:

1.        This requires continuous uninterrupted internet access.  This is not currently feasible.  WIFI and Cellular G3 broadband connections are not ubiquitous.  Therefore, I think a mobile application that sync up in real time over the air is a better solution.  The web page is important too but not if you are offline.

2.       The public at large (especially of consumer devices) want a richer interaction than a mobile browser can give.  Even AJAX is going to have to come a long way on mobile devices.