Opt Out now.

You have till tomorrow.

http://www.googlebooksettlement.com/r/enter_opt_out

If you want to confirm it in writing, send a signed letter, postmarked September 4 at latest, to:

The Settlement Administrator
Google Books Settlement
c/o Rust Consulting, Inc.
P.O. Box 9364
Minneapolis, MN, U.S.A., 55440-9364

Over and out.