Are Google Using recaptca to SPY

It seems Google is attempting to force people to be logged into their Google account to be able to use recaptchaWhen not logged in you seem to get random text with a inverting blob for both responses and rarely do the captcha'sand answers match.Does anyone know why this is or is it just google wanting to spy on users. -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://groups.google.com/group/recaptcha. For more options, visit https://groups.google.com/groups/opt_out.