you'll probably do best to use the usual methods of posting pics to a hosting site. imgbox.com works well, and you can post there anonomously, or register and keep the pics posted there together in your account(still free and easy) Then you'll only need a few more posts on the forum to have enough for links access. That's easy enough too, by making an introductory post, and a few hellos etc.
Most anyone who doesn't know you better will likely be hesitant to go downloading photos of unknown origin, due to the numerous risks associated with such files ; )
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