How do you use tag clouds with your photos?

A tag cloud is exactly what it sounds like in terms of links. What it looks like is a square of text links, each word linking to something relevant of the word, and some of these links have larger...

A photo tag is when you label a part of a photo that says who it is or what it is. If you tag a person who is your friend, then it will automatically create a link to their profile.

For what?

yes

Using photos from a site its a matter of the license the sites uses to publish the photos under. You have to check the license and see if your use case -e.g. private/commercial usage- is allowed or...