To use it, simply append a site to http://ft.prn.la, e.g. http://ft.prn.la/wired.com , http://ft.prn.la/time.com , http://ft.prn.la/techcrunch.com .
You can also append an RSS feed, e.g. to read Hacker News RSS: http://ft.prn.la/news.ycombinator.com/rss
What do you think?
A bit of background: http://blog.cliffano.com/2011/02/20/do-you-find-websites-hard-to-read-on-the-iphone-try-feedtouch/