I had noticed that when I got a receipt for a donation I made to them, but I assumed “Clear Fund” was their former name and they hadn't bothered to legally change it or something and didn't worry too much about that.
This is extremely common, though the link pinyaka gave has a column for "doing business as," which should say GiveWell, but is left blank.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Of course, for "every Monday", the last one should have been dated July 22-28. *cough*