then you should post those links slyvar.
with just a quick look at this code it's obviously unique. my guess is that this is n3m3s1s's style of coding.
this is not needed.

  sockwrite -n $sockname Connection: Close
  sockwrite -n $sockname Content-Type: text/html

these are already defaults for youtube servers.

nobody does this

if (%ytube2 == $null) && (%sockread == $null) { noop }

this would be more normal

if (!%ytube2) && (!%sockreadl) { noop }

but most people would use a positive check for this anyway.

also %sockread isn't even needed. a simple check for could be used to close the socket if it dropped past the title check.

and this:

while ([ $chr(36) $+ [ %ytube4 ]  ]) {

thats really abnormal.
this would be more normal

while ($+($,%ytube4)) {

and even with that the method used here is very unique and not something you most would even think of.
this would be a more rational approach.

on *:TEXT:*youtube*:#: {
  while ($1) {
    if (www.youtube.com/watch?v= isin $1) { 
      sockclose youtube
      youtube $1
    }
    tokenize 32 $2-
  }
}

and even that is in error because it still checks every token for a link just because youtube was said in a channel.
most people would just check for the link in the on text event.

i could keep going ....
everything about this code is unique and NONE of it is YOURS.

changing variable names and channel messages slightly is not writing a script. you didn't write any of this and you should be ashamed for posting it.
at least conform to the rules and post the link that you ripped it from.