"I do love secondhand books that open to the page some previous owner read oftenest. The day Hazlitt came, he opened to 'I hate to read new books,' and I hollered 'Comrade!' to whoever owned it before me."
As far as I know, there isn't anywhere to send photos, unless you contact Support. They may be able to provide an email address.
If you have a Flickr account or something similar, you could upload the photo there and then post the URL here. Then one of the region managers may be able to copy and upload the photo to the relevant zone.
Alternatively, if there's already a photo online somewhere, you could also just post the link here.