Here are the steps to post more than one photo at a time:
1) Log in. Any registered user can upload photos
2) Goto the Gallery area
3) On the Gallery screen, click on "User Panel" to take you to the area to upload photos
4) Click on the "Upload" button
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5) Here's the tip, click on the tab that says "Drag'n Drop Upload". Then drag you pictures to the highlighted green area. Your limited to uploading no more than 50 pictures every 10 days.
6) Fill in the rest of the fields, then click "Upload" to save the pictures to the server.