A lot of people became AFI fans due to this album. There is a lot of prejudice toward fans that heard STS first, some of which is justified.
The AFI community is composed of very very hardcore fans that are annoyed when someone claims that they are are huge AFI fan when they've only heard one of the six albums AFI has made, not including EPs, vinyls, ect. Most of the time, that one album is STS.
Fan1: I became an AFI fan through Sing the Sorrow. Now I own all of their albums! I love AFI.
AFI community: That's cool.
Fan2: OMGliek sliver n c0ld iz hawt!!1 a.f.i. ROX MY SOX! 1'm thur B!GG3ST F@N!