Somebody is trapping my complete one page site in a frame and published it under their url. Where should I report this to Google? Why are they doing this ? Whats their benefit ?

They are using 6x.to to produce subdomains for this, like here:

proxbot.6x.to
bemyproxy.6x.to
sp-5.6x.to
scoobidoo.6x.to
blogspot.6x.to
proxyvan.6x.to
uniquetunnel.6x.to
squidsurf.6x.to
proxiezone.6x.to
sp-8.6x.to
the-web-designer.6x.to
urlcutter.6x.to
sp-20.6x.to
sp-17.6x.to

You will find that the original site is a .com on all this domains. They are just stealing.