Is it ever so necessary for every comment to be a criticism of the trigger?yes. however....

if (!$2) || (!$3) || ($2 !ison $chan)  { .notice $nick $logo(Error) Please specify a song/nick $chr(124) !dedication <nick> <song> <artist> | halt }

you could remove the !$2 part of the /if statement seeing as if $2 isnt on $chan it wouldnt matter if there was a $2?

if ($left($1,1) == !) .notice $nick $logo(Dedication) $c2(Dedication sent to $2 $+ !)

may be deliberate but i dont see anything for if $left($1,1) == @

hadd -m $sockname end $regml(1)

seems redundant if ur just gonna free the table in a few lines comepared to just using $regml(1) instead of $hget($sockname,end)