What are the blue labels?

[epenguin]

I have just noticed little blue labels alongside certain pasts and when you click on them you get some keywords. I can see words that look to me equally key that have no labels. If this is because the list is not complete, then when it is most posts will have a label so then there would be little point in it.

What is the idea or criterion?

 

[Moonbear]

Those are posts that people have added tags to. You can add tags to posts too, if you think they are worth making more searchable with keywords. Just scroll down a little and look for the box that says tags and then to the right it says "edit tags." You can click that and add some.

 

[epenguin]

Thank you.
Gosh, has that always been there? I only noticed them yesterday. Well it is quite a pale blue.

I did a tag search for something that is not there and got something called a 'tag cloud'. What's a tag cloud?