[villagetinker]

OP, if you know these people, perhaps you could approach this during a friendly conversation, saying something like my (friend, relative, acquaintance) found they were due some money from (xyz site). I looked but nothing was owed to my, would you like to look up your name? Or something like that, this is an honest offer and if they are not computer literate, you can help them.
PS I took a look at the sites, and these appear to be legit, I was not aware of the second one as I had another site book marked that I check periodically.
PS I and my wife are from PA and now live in FL, and I have found "that we are due money" from HP, this is very OLD info and not valid. So if we happen to be the people, we know about it.