Do this delay pool correct?

[syedadi]

delay_pools 2;

acl filesharing url_regex -i 2shared.com 4shared.com depositfiles.com easy-share.com filefactory.com fileserve.com filesonic.com hotfile.com letitbit.net megashares.com megaupload.com oron.com rapidshare.com rapidshare.de sharingmatrix.com turbobit.net uploaded.to uploading.com uploadstation.com wupload.com zshare.net;
acl local_user;

delay_class 1 1;
delay_parameters 1 -1/-1 15000/12428800; #all file download from the site with 10mb will be reduce the bandwidth to 15kbps
delay_access 1 allow filesharing;
delay_access 1 deny all;

delay_class 2 2;
delay_parameters 2 30000/30000 20971520/20971520; #all user that exceeds 20mb will be reduce their bandwidth to 30kbps
delay_access 2 allow local_user;
delay_access 2 deny all;

can anyone verify this?