i'm not sure if i've ever had spam itself... tho just about everyone has eaten the parts that make up spam, which is primarily pork-shoulder. also known as a "pork butt". my part of the southern us, we just call it bbq.
as for the sweet taste... i find this interesting, as coke over in europe (and especially the mess thats in the uk) is also not as sweet as the original, american version. (and its not to do with the sugar type, i'd beable to taste that difference).
infact, went to world of coke last year in atlanta, and was hugely dissapointed they didnt offer the variations of coke itself. only the other products they have around the world. as i wanted people with me to know what it was like drinking coke from europe. i still remember in germany, they served it with a slice of orange even.... err.. ok, starting to get a tad off topic now