[thrilleratplay]

I do the same with XXX. There is no sense of urgency but still acts as a placeholder that stands out. I use it to record a thought:

   // XXX: There must be a cleaner way to implement this

or call on someone (most likely myself) to replace with a NOTE clarifying why an out of place snippet of code is needed or verify it came be removed completely

    // XXX: Is this check still relevant?