Remember that fonts are protected by copyright law. When you ‘but’ a font, you only acquire a licence to use it, usually on one to five computers. You should not pass fonts to friends, colleagues, or contractors. It is very common practice to do so for one-off jobs where it would be uneconomical for everyone in the production chain to buy their own copy, but you should be aware that there is no legal protection for this. Embedding fonts in PDFs largely obviates the problem