Earlier quoted context omitted.
Out of interest, did you rename the font prior to use? I'm curious how they found it. You can also just stick them in a font-editor and re-export "as your own font" with some minor tweaks. Not that you should, of course.
You really should pay, especially for work by small foundries. Making a typeface takes a tremendous amount of work. The financial upside is extremely hard to justify. I think non-designers underestimate the amount of effort required by an order of magnitude. I put it in the territory of building indie games. Potentially years of your life go into it, and it's a huge problem if everyone pirates your work.
That said, a certain corporation's bought up a load of fonts made over the past x decades and is making a tidy sum selling old rope again and again without adding anything of value, or funding the original designers/converters, so I'm quite happy to illuminate how an individual can get around such things for use on their personal blog with an audience of ten, should they so wish.
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ed - you're also not as likely to be able to get a whole usable font from a small foundry in the first place, without buying it.