Well I can answer #9.
the TGPx script fakes its referrer as google when fetching the page after submission. The default it uses is
http://www.google.com/search?hl=en&q...=Google+Search
which the TGPx owner can change. The reason given by jmbsoft is
"Using Google as the referrer gives the best chance of having the gallery load correctly for the scanner, since very few sites are likely to want to block requests from such a popular site."
some TGPx owners have changed the fake referrer to yahoo, msn, or GFY.