As far as wall posts go, you for sure need to test and check to see if it goes up using another account/browser. I always use FF, but I open IE when I want to see if the post actually is posted, because of course they show it to the one that posted it, but others dont see it if it is spam.
I still have not figured out the spam words. One I use the word free two times and it all goes through, got over the past two days I got $700 each day. I do think gift card is being targeted because one of mine with it was being trashed.
EDIT: On a side note I looked at my AM facebook profile, he liked 4 pages I post to, so of course I now wont post their offers on those pages. Not that he frequented them, he had liked some 160 pages, most were media type.