The "send to personal page" box in the upload page is a setting for a user to specify whether they want the item in question to go directly to their personal page, or if left unchecked sends it to the moderation que.
All items sent to the moderation que are subject to the moderators descresion of whether to be approved to go to library, go to personal pages, or to be rejected completely. So not all items sent tru the moderation process, actually make it in to the galleries. Skins are often sent to the personal pages for various reasons. I believe if you check your email it should have an email in it further detailing why it was sent to your personal pages.
