Actually, I thought by highlight you meant root nodes which is why I suggested Super Search (if you just want all nodes create by a user try Perl Monks User Search), if it's something else I don't know what your talking about as I've "personally created" everything I've written on PM.

Okay, bad choice of words.  I should have said "writeups a particular monk had personally originated as opposed to merely responded to."  But yes, you are correct that I was thinking of "root nodes".  I still think it might be nice to have them stand out (in a separate color) but still included with all writeups for a given monk, like this:

Node ID	Writeup	Rep	Created
500000	Re^4: Suggestion for User Search Page	305	2005-09-22 15:14:22
494122	Re^2: Why aardvarks don't program Perl	5	2005-09-22 10:04:51
494107	Why aardvarks don't program Perl	2	2005-09-22 09:39:24
494091	Re^2: The Perl equivalent of Duff's Device	5	2005-09-22 08:35:46
493449	Re^2: The ternary operator revisited	12	2005-09-20 09:51:18
493360	Re: An alternative to 'use strict'?	13	2005-09-20 00:42:30
493359	The ternary operator revisited	11	2005-09-20 00:35:17
493172	Re^5: Obfuscated, or just badly written?	2	2005-09-19 10:21:53
493061	Re^4: Reassigning $/ considered harmful	3	2005-09-18 17:53:54
493048	Re^2: Reassigning $/ considered harmful	1	2005-09-18 15:34:53
492589	Re: A Mandelbrot in 7 characters	-1	2005-09-16 08:14:56
492477	A Mandelbrot in 7 characters	81	2005-09-15 12:24:57

Additionally, the new keywords feature may (eventually) provide some value in this area.