Committed: (Verb) To be dedicated to something.

Jenna Jameson went, (sigh) what else -- naked! -- in a new ad for PETA encouraging people to spay and neuter this pets.

“Until dogs and cats can go on the pill or wear condoms, we need to help them practice safe sex — by spaying and neutering,” says Jameson. “Millions of homeless animals are turned in to shelters every year because there simply aren’t enough good homes for them all. The answer is easy as ABC: animal birth control, which means get Fido and Fluffy fixed!” (Source)

Well, you know she must be serious about the issue if she's willing to get naked over it. I hear Jenna Jameson only gets naked for her most dedicated causes, like helping the animals or stuffing fifteen wieners into her orifices simultaneously.