Template:Message

Usage

 {{Message
  | bgcolor      = background color
  | border-color = border color
  | color        = text color
  | linkcolor    = link color (for "new message" link)
  | extra-style  = extra styles, like -moz-border-radius etc...
  | width        = box width
  | margin       = margin measurements
  | padding      = padding measurements
  | text-align   = text alignment (left, right, center)
 }}

All parameters are optional, and default to the appearance shown above.

Just put {{Message}} at the top of your talk page or user page. This will create the "Please leave a new message" link as shown above. You can use subst: if you want to, but then you won't benefit from updates to this template.