°Qué es la banda ancha?
°Cuidado!
I've come across quite a few cases of the degree symbol (°) being used in cases where I would have expected inverted question and exclamation marks. Is this a stylistic choice? A case of bad/corrupted data? A workaround for older computer systems that don't support the "¿" and "¡" characters?
If it's broken, it should be fixed, but if this is a valid syntax then I will leave it alone.