Please note that if you wish to view galleries or videos embedded into a post with HTML, you must enable it within your profile. This can be done by:
1: Go to "Profile"
2: Select "Preferences"
3: Scroll down to "Always Allow HTML" and selected "Yes".
This feature is nice because it allows us to embed things like photo galleries from other websites (such as IMGUR), without making the post nasty and unorganized with spoilers and coding.
Enjoy!