It requires substantially more compute power to match "facebookcorewwwi" vs just finding a hash with a prefix of "facebook" that looks readable. Good luck hashing the remaining eight characters!
But for the non-hash-aware among us, it would take on average 2,147,483,647 as long to brute force the last 8 with the same computing power and 4,294,967,295 as long to hash every combination of the last 8. This all assumes no vulnerabilities in the algorithm, of course.