I found this but i don't know how reliable is the source tho (http://www.onlineshark.com/prowebsites.html)

"*Pro and Celebrity Online Screen Names


Scott Fischman-Emptyseat88 Ultimate Bet & Pokerstars
WestTexasMan- Shawn Rice Ultimate Bet & Pokerstars

All Below Are Pokerstars Screen Names

Dan Negreanu-DoubleSuited
Hoyt Corkins-EasyH
The Poker Babe-Siren
EDOGN- Erick Lindgren
reloadthis- Layne Flack
Prefontaine- Prahlad Friedman
razorbax- Josh Arieh
MrPokeJoke- Mike Matusouw
luckysucker- Hans "Tuna" Lund
Erik123- Erik Sagstrom
TheBeat- Pete Giordano
gank- Brett Jungblutt
bigglesworth- Thomas "Thunder" Keller
magicpitch- David Benyamine
el blondie- David Colclough
fossilman = Greg Raymer
tom mcevoy = Tom Mcevoy
money800 = Chris Moneymaker
Noo limit scootty ngugen
#1_Lucky_One = Phil Hellmuth
capnncoke = Chip Jett
the shrike = Howard Lederer
PateK - Simon "Aces" Trumper
Dblgutshot Kirill Gerasimov, Moscow
Jdags Jon Dagastino, lost to Ivey in first live TV event in Aug. 2004

All Below Are Ultimate Bet Screen Names


psykokwak is Bruno Fitoussi
Erik123 Erik Sagstrom
atl-angela Josh Arieh 3rd 2004 WSOP
dill pickle Mike Matosow “The Mouth”
Formerly Devastator now Spirit Rock = Prahlad Friedman (Best NLHE player online)
Annie Duke - AnnieDuke
Phil Hellmuth - PhilHellmuth
Devilfish/David Ulliot
LayneFlack/Layne Flack
joe buttons - Phil Ivey (using a new name?, unknown). For fun ask Ultimate Bet to start a heads up table for you. Let’s say $400/$800. When Mr. Buttons comes to visit run like hell. He sits there for hours, very few takers.
Tallphil - Phil Gordon
empty chair - Eric Sidel (has a new name?, unknown)
scottynguyen - Scotty Nguyen (seldom plays on UB)
Ticker Erik Lindgren, Swede - (won 2003 UB Aruba Tourney)
Peasant - Juha Helpi (2002 winner of the Aruba Tourney)
bizingo is Ben Affleck (does well in pro NLHE game, (so tight he squeks)
tiltboy, Rafe Furst
Krullis, Daniel Larsson 2nd UB Aruba 2003 won 300K
wetspot, Harley Hall
Zhuge Liang, John Juana (using a new name?, unknown) incredible player
kid55 is Freddie Deeb


*All listed screen names are correct to the best of our knowledge. Keep in mind Pro's change screen names often, since they are looking for action. It's fun to watch the aggressive play and funny chat. Try to figure out "whos who" by the smack/chat they throw around.

Ultimate Bet and Pokerstars are the most popular sites for pro’s online."

With all his crying about bad beats, Hellmuth using the name "#1_Lucky_One" makes me laugh.

does anyone ever have any luck finding anyone on pokerstars? I search for them but there never on or use that block from search feature