I'd say: The more signatures, the merrier

LOL
this the 'rejection' email
Hello,
Thank you for submitting Photo 23552263. However we discovered a problem (legal problem, lack of signature, wrong file format, or it was illegible) with the model/property release that you submitted. Please remember that the release must be submitted as a JPEG or PDF file. As a result of this problem your photo has not been validated.
In order to protect photographers from possible legal action Fotolia is very strict with regards to legal issues such as this.
You may download a copy of the Fotolia model and property release by logging into your account, clicking on the “Information and Rights” tab and then click on the “Download Release” button.
To change the model release just click on the Edit button next to your photo in the My Photos section, replace the release with a new file and click ok to finish.
Pictures of people will most often be your best sellers. Your extra time investment to submit a legal model release will have handsome rewards in the future.
To discuss any technical problems/issues, please feel free to post and review messages on the Q&A board of the Fotolia forum.
If you have any question please feel free to contact us at any time.
I think they are just looking for the signature, but it would have been nice if they had a mail out.