Thank you for the observation on our local board. So in regards to your question you just asked. Nigeria is an English-speaking country with over 250 ethnic groups who speaks different dialect each, but is known to have a particular language which all these Ethnic groups/tribes  speak in common known as the "Nigerian Pidgin English", which is a combination of normal English and our Nigerian dialect/slang. Which is the reason why you happen to come across pure English on our local board, as it's also acceptable.
So I hope you understand now??