Just because someone doesn't speak or write English well doesn't mean they're a scammer. Course the internet is full of scammers, but if you're only red flag is poor English get ready to be scammed by millions of people who speak it perfectly well. or you could just get off your computer and walk outside and actually meet people.

The examples you gave sound like Nigeria scammer emails. From dee desk of Mr. [name that sounds like a Harry Potter incantation], please to be sending me a check for $10,000!"

I've seen much worse right here on IA