Sounds like an interesting task, just for doing it. However I doubt I will ever use it:

• As others, I hate the idea having a dedicated app for each website I visit ... Safari is working good enough for most pages
• More important, I use perlmonks mainly when working at my PC. Before posting, I verify the code on the PC. And if I see some interesting code, I copy&paste it to my development environment. If I would surf PerlMonks via iPhone, I would loose that possibility ...

Nevertheless, if you want to improve your objective-C-skills just go for it!

Have fun! Rata