To get the most credit out of manual sieving, yes, you need to submit your factors at

http://www.seventeenorbust.com/sieve (don't forget to log in)
and
http://www.psp-project.de/sieveimport.php (check "Sob factors reported by user"; you need to drop a message in the "Join a team"-thread so that he can affect you to your team)
H.