Type less captcha on /b/

I know, back to /b/ and stuff.

I tried to type two times the same captcha, changing the recaptcha id with firebug and it worked. So, with js and a php site, is possible to type 10 captcha and post 20 posts without typing them?
And it's possible to make a service like that?

And someone can write worst english?

>>2
Each captcha is represented by a challenge, along with the appropriate solution (the response). As soon as Recaptcha registers that a captcha has been used, the challenge/response will become invalid. That is, you cannot post with the same captcha twice.

Also storing captchas in a database is pointless, as the challenge only remains valid for 15 minutes.