I do love my n810!
And I really sad about the degradation of Internet tablets - I mean n900 (It my opinion.) I hope Nokia will create something between 770 and n810 for us.

40% is for Web access for me. (Tear with some improvements)
10% is for IM (jubber) and VOIP (Skype) (Thelepathy, Pidgin, Skype)
30% is for reading (Fbreader)
10% is for listening music and watching a movies (or youtube) between the lessons in the university (Youamp, @scene, Mplayer)
10% is for other fings, like games or music (Theremin), office (working with .doc, .xml etc) (Abiword, gnumeric) or GPS navigation (I love the GPS so much, it works very good and saved me so many times) (maemo mapper + minigpsd)


Unfortunately its not so good like my Palm TX. Palm much better like PDA, but n810 is an Internet tablet, not PDA. I am using both of it.