From wikipedia:

"A tag is a non-hierarchical keyword or term assigned to a piece of information (such as an internet bookmark, digital image, or computer file). This kind of metadata helps describe an item and allows it to be found again by browsing or searching. Tags are chosen informally and personally by the item's creator or by its viewer, depending on the system. On a website in which many users tag many items, this collection of tags becomes a folksonomy."

To sum it up, tagging is like catagories, but not fixed. You can created a new catagories simply by typing it in!

When you upload an item in our gallery, or edit an item, you can now enter new tag to any of your items, simply fill up the "Tags" field, one line per item! Space is allowed! For example, you can enters a list like this:

Bunny girl
easter
Eka
F/f
naga
stuffing
vega

And you can see an example of the result here.

A few things to remember:

• You should always enter Non-Vore if the item is considered off topic.
• Always enters vore type if possible!  Examples: Oral Vore, Anal Vore, Unbirth, Hard vore, Tail Vore, Cock Vore, Combinations (if more then one!)... etc
• If Sex is involved, enter it! 
• Always enters genders! Predator first on the left, then Prey second on the right. If unknown gender, use "?". Examples: F/M, M/F, M/M, F/F, H/F, ?/F
• Enters speices. Examples: Furry, Human, Naga, Dragon, Catgirl, Monster, Dog
• Other tags are optional, but welcome! The more the merrier! Examples: Head first, Feet first, POV, Mawshot, Color, Sketch, Macro, Micro, Anime, Fox, Firework, Naked, Long hair, Big belly, Inflation, Transformation... etc. I'm sure you can think of many!

Click here for some of the most commonly used tags!