I found in a Bruno Giussani’s post a link to wordle, a program that translates a text into tags.
I love it!
It is not only poetic, beautiful, with rich features (many fonts, colors random layout, etc..), but it gives in a glimpse an idea of the core content of a text.
In a marketing point of view, it can be useful to give in a couple of words the essence of values, of key benefits, key features, of a product or even a company.
It really gives a plus to the TAG function.

Well, in the meantime, here is one more personal: