1. rigidity: in geometry and format, assume tablet or force app
2. curiosity: sniff user agents, IPaddress, cookies and personalize content
3. fragmentation: split pages into many subsections to get more page counts
4. complexity: javascript for video, flash for pictures or navigation
5. cleverness: need user manual or have adventure skills to access content
6. appearance: content should always come before "how it looks"
7. greediness: tiny pictures only, streaming video, too many adds
8. volatile: content is removed or relocated or uses horrid URLS
9. obfuscation: iframes with hidden URLs, long URLs, individualized URLs
10. walled off: access only through registration, walled off content

 qemu-img create win7.img 12G
 qemu-system-x86_64 -hda win7.img -cdrom Win7_64_EN_DVD.iso -m 512
 

 A0={{0, 0, 0, 0, 0, -1, 0, 0, 0, 1}, 
     {0, 0, 0, 0, 0, 1, -1, 0, 0, 0}, 
     {0, 0, 0, 0, 0, 0, 1, -1, 0, 0}, 
     {0, 0, 0, 0, 0, 0, 0, 1, -1, 0}, 
     {0, 0, 0, 0, 0, 0, 0, 0, 1, -1}, 
     {-1, 1, 0, 0, 0, 0, 0, 0, 0, 0}, 
     {0, -1, 1, 0, 0, 0, 0, 0, 0, 0}, 
     {0, 0, -1, 1, 0, 0, 0, 0, 0, 0}, 
     {0, 0, 0, -1, 1, 0, 0, 0, 0, 0}, 
     {1, 0, 0, 0, -1, 0, 0, 0, 0, 0}};
 A1={{0., 0., 0., 0., 0., -1., 0., 0., 0., 1.}, 
     {0., 0., 0., 0., 0., 1., -1., 0., 0., 0.}, 
     {0., 0., 0., 0., 0., 0., 1., -1., 0., 0.}, 
     {0., 0., 0., 0., 0., 0., 0., 1., -1., 0.}, 
     {0., 0., 0., 0., 0., 0., 0., 0., 1., -1.}, 
     {-1., 1., 0., 0., 0., 0., 0., 0., 0., 0.}, 
     {0., -1., 1., 0., 0., 0., 0., 0., 0., 0.}, 
     {0., 0., -1., 1., 0., 0., 0., 0., 0., 0.}, 
     {0., 0., 0., -1., 1., 0., 0., 0., 0., 0.}, 
     {1., 0., 0., 0., -1., 0., 0., 0., 0., 0.}}; 
  G0=Eigenvectors[A0]; n0=Length[A0]; l0=Eigenvalues[A0];
 G1=Eigenvectors[A1]; n1=Length[A1]; l1=Eigenvalues[A1];
  Chop[Table[Max[N[Abs[A0.G0[[k]]-l0[[k]] G0[[k]]]]],{k,n0}]]
 Chop[Table[Max[N[Abs[A1.G1[[k]]-l1[[k]] G1[[k]]]]],{k,n1}]]
 

 {l0,G0}=Eigensystem[A0]; {l1,G1}=Eigensystem[A1]; 
 Chop[Table[Max[N[Abs[A0.G0[[k]]-l0[[k]] G0[[k]]]]],{k,n0}]]
 Chop[Table[Max[N[Abs[A1.G1[[k]]-l1[[k]] G1[[k]]]]],{k,n1}]] 

 u1sdtool --list-folders u1sdtool create-folder /home/user/list/to/directory  

 M = 100; T[x_] := N[4 x (1 - x), M]; x=N[Pi/4,M]; Do[x=T[x],{200}] 

 sudo mount.davfs  http://192.168.1.4:8080 /tmp/downloads 

 sudo rsync -avzu --delete ebooks /tmp/downloads 

 ln -s /Volumes/192.168.1.4:8080 /tmp/downloads   

• Good reader. Nice to orgnize PDF's, for example from the web or uploaded from the computer via sftp.
• Space time. A decent computer algebra system. A bit pricy but not bad. I would prefer to have a local Mathematica application. (Cloud computation like Wolfram Alpha is not an option for me).

 N[Log[Abs[Pi^60-E^55 -674515394754870253998413140641]]] 

 N[Log[Abs[Pi^60-E^55 -674515394754870253998413140641]],30] 

1. Presentations: I want to write on my keynote slides directly during the presentation and not have to use an additional wacom tablet, which only works unreliably and especially does not work for OS X. I would like to test my presentation on my own device. Having keynote and powerpoint integrated well in a tablet opens a lot of new possibilities for teaching with slides. Apple seems to work on iWork for tablets since years.
2. Technical texts: reading books and technical papers on PC's is painful. Not because of the format, but because the interface is terrible. Apple could change the game here. Having a small tablet which contains my ever growing electronic math library would be fantastic. Reading texts on the iphone works already surprisingly good and even so the processors are tiny in comparison to the power of a PC, things go smoother there. PDF and DjVu software is still not well done on desktop computers and part of it is that one can not interact well with it. Scrolling can be a very slow (fractions of seconds are already annoying). Zooming forth and back frustratingly cumbersome. The ipod touch with an incredibly small CPU and where things work often better than on the PC shows what could be possible.
3. Textbooks for students: Textbooks are so expensive that buying the textbook for one semester can cost more than a PC. Making good electronic versions available and carrying around heavy textbooks will soon be a thing from the past. Of course, the publishers will distribute textbooks in electronic form in the future, but only heavily armed with DRM. I wonder how this transition will work given the fact that most textbooks (and homework solutions!) can be downloaded easily in electronic form. But this is an other battle. The prospect to have a high quality reader not larger than a sheet of paper and 10 times lighter than a typical calculus textbook is wonderful. [Nobody knows why text books have increased in size so much, compare!]
4. Taking notes Additionally, one could use the same tablet to take notes or even do the homework in writing. This is tricky, as everybody knows who has signed electronically for a package or creditcard receipt. Capturing handwriting on screen, so that it looks as if it were written with a pen on paper is difficult. I don't expect this to be solved soon, but it would be nice if screens would behave like paper, when writing on them. The trick is to get the right amount of friction and have precise pressure sensitivity.

• Video-phone technology is long ready but did not replace traditional phones because nobody wants all the time to be visible. Even with a "bad hair day" or in the bath room, one can still make a phone call. Personal and privacy reasons have stopped video phone calls to become main stream and most calls on skype don't use video.
• Instant messaging did not replace email. Not because it would technically be superior to email, but because of its "instant feature". Sometimes, one has to work on something without being interrupted. It is not the technology, but the work-hygiene which prevented instant messaging from replacing the older technology.
• Wikis and blogs have not replaced traditional websites. While a well moderated wikis can become a success like Wikipedia, most unmoderated Wikis are a disaster after a short time. They become a spaghetti-link-soup, where every forth word is a link. Traditionally designed websites with logic, priorities and focus have not been replaced by the newer publication formats.