Don't get all defensive. It's a legit question. It's slower than browing on a PC, there's no keyboard, and without an HDTV most sites will be unreadable. What's the appeal?
The appeal for me is the fact when I get up in the morning before heading off to school/work (whenever I get called in, <3 part-time), it takes only 20'ish seconds to get my Wii booted-up/logged in to the Internet Channel where I can get a quick check-up of the sites listed in my favourites, rather then the 5min some time of my life wasted booting my PC up just to open Firefox.
It is readable on a standard crappy 480i TV, there's a zoom-in mode which essentially makes the webpage appear as if you were viewing it on a 640x480 rez (which the TV is in retrospect), where-as the zoom-out appears to emulate the page size on a 1024x768 display, which I mainly use for scrolling about/image viewing.
No USB keyboard support is my largest complaint about it, hoping the full version has support for it, otherwise it'll just be a "get all my favourites on the thing for quick check-ups" browser.
Gotta say though, it sure beats the $&@(ing crap out of surfing the web on the PSP.
Just hope the full version seriously does add a lot more features, as this trial appears fairly nice and stable at the moment.