Why daily builds on the installer page for testing point to sid?

["R. Ramesh" <rramesh@verizon.net>]

Hi,

 I thought testing is named etch. But when I go to debian installer 
page for netinst image for amd64 version, I get an iso file that is 
named xxx-testing-xxx.iso. However the title on the page says it is Sid! 
I am wondering if this a typo on the title or is there a link problem 
that makes me fetch sid instead of etch?

Regards
Ramesh