Not sure either - but here's my answers for a sanity check!
1. POST - wouldn't want a password (confidential info) to be displayed in the address bar which it would be if GET were used.
2. GET - get's can be bookmarked and the user might want to bookmark the new page.
3. POST - text might be too long for GET and/or may contain confidential info they would not want displayed.
4. POST & GET - depends on the information being sent (if confidential or lots of info, then POST. If no info or unimportant info, then GET)
5. Hmmm. POST I guess, since there might be some confidential info even on logout at a secure site. If not you might get away with GET?
6. POST or GET - depending on what was used to get the page last time.
7. POST - I'd treat address information as confidential so wouldn't want it in the browser address line. It could be a long address too.
8. GET - There's nothing too confidential about a radio button selection that I have come across.
Hope this helps!
If anyone disagrees feel free to comment!
Cheers,
Roger
SCJP 1.2,1.4
SCBCD 1.3
Studying for SCWCD