* It is (arguably) slower than NetSurf.
* You'll have to code the entire GUI and a lot of expected features yourself.
* and of course it's more work to port a new browser than do a bit of work on an existing one (OWB is quite a lot larger than NetSurf and takes much longer to compile - it is also all in C++ which puts me off!)
I've spent a year less on NetSurf than Joerg has on OWB, and I have ended up with a more complete browser - because most of the functionality is in the core already, it just needs a menu or button added.
LOL. I didn't even realise my camera had a red light on the front until I played back the video. The mouse is a cheap one, and I was getting quite good at Lander a while back but didn't want a three hour video of me playing it.
Scrollwheel support is an emulation feature, implemented cleanly with a support module. higher resolution screenmodes are also supported.