A common problem is that the toll free 800 numbers common in North America are not easily or cheaply accessible from the rest of the world. Look closely at the orginators domain address to see if they can affordably contact your recommended source. Keep in mind that various systems and standards are different around the world. Household power voltages and frequencies are different, and the techniques and regulations to deal with wiring are different enough to cause safety problems if you try to use the wrong one. Different scan rates and encoding systems make things incompatible.
More recent innovations are even more diverse.
For example, stereo audio on television transmissions in the UK, Scandinavian countries, and other parts of Europe is a almost CD quality digital transmission, while in the US, the MTS system is a variation on the analog subcarrier system used for FM stereo. Not only are the systems different, so is the jargon used to describe them. What might be a Ground Fault Interrupter in North America, would be a Residual Current Circuit Breaker across the Atlantic. A. Nope, sorry. This causes them to be distributed to each of those newsgroups when they are received and processed at a news server.