filename is never used for indexing so let's make it text
filename is never used for indexing so let's make it text

varchar is pretty limited so let's avoid it if we can

studio666/gnu-social,studio666/gnu-social,charnimda/lgbtpzn-social,charnimda/lgbtpzn-social,foocorp/gnu-social,charnimda/lgbtpzn-social,Piratas/tortuga,chimo/social,Piratas/tortuga,foocorp/gnu-social,eXcomm/gnu-social,furtherfield/gnu-social,bankonme/gnu-social,eXcomm/gnu-social,faulteh/gnu-social,foocorp/gnu-social,furtherfield/gnu-social,Piratas/tortuga,studio666/gnu-social,faulteh/gnu-social,faulteh/gnu-social,eXcomm/gnu-social,faulteh/gnu-social,chimo/social,chimo/social,furtherfield/gnu-social,bankonme/gnu-social,furtherfield/gnu-social,eXcomm/gnu-social,studio666/gnu-social,bankonme/gnu-social,Piratas/tortuga,bankonme/gnu-social