The screenshot below shows the write screen.
There are limited options but anything more complicated would probably be best done on a larger screen device.:
Having installed the WP iPod Touch plugin I have to say it seems to work brilliantly. The 1st screenshot below shows the standard blog postings with links to search and also a link to the menu.
This is the menu view showing the icons I chose in the plugin configuration. There’s also a link in the footer to switch to view the site via the normal theme and back again. Although my normal theme seems ok on the Touch this optimised theme does work much better. Thumbs up to the developers for a great job!