I'm with Tex on this one. The majority of sites I have no problem with. Microb doesn't handle page-scaling quite as well as Opera, and it's not quite so good at handling those annoying Google AdSense adverts that sometimes end up overlaying the text, but compared to pretty much anything else out there that isn't a laptop or better, it's about as good as you are going to get.

Examples:

1) Posting on a phpBB BBS lying on a beach in Tenerife
Easy as long as you kept the screen in the shade, and the suncream off your tablet. I don't have an N810 so I can't comment on the Transflective screen, that might improve readability in bright sunlight.

2) Reading the BBC News site while walking down the road: no problem for me, but dangerous when you come to a T-junction

3) Random Googling on the bus (unlimited Data plan FTW) no problems.

4) Facebook/LinkedIn/Digg/Regsiter/Slashdot all render just fine.

Does that help?