For what its worth good job, seems you had some free time or were very bored one day. 
Agent R22 Dinged lvl 50 on 5-2-07, 509 logged hours, 3 years playtime
Oh, and the Pawn Shop in Peregrine Island has a burnt-out letter 'a' in it's neon sign:
[ QUOTE ]
Pawn
Shop
[/ QUOTE ]
I thought it was a cute touch. 
The following are all of the signs, ads, and billboards of every business I have seen in City of Heroes. Why did I compile this list? Beats the heck outta me! Because its fun? Well, hope you think its fun anyway
COH BUSINESSES AND BILLBOARDS:
BADGUYS
Off the truck prices. No questions asked.
BAR
BELL MEDICAL CENTER
BIOTECHNIX
(mutant enhs shop)
BLACKWELL
Solving the problems of tomorrow today.
CHILLIN VILLAINS BAIL BONDS
Heroes puts em in we gets em out.
CHRIS JENKINS
Attorney At Law
Have YOU been injured in a superpower-related conflict? SOMEONE is responsible for your pain. Call now for a free consultation 1-555-GET-RICH.
$$$$$ Sue! Never work again!
CITY OF GYROS
COOKES ELECTRONICS
(science enhs store)
CREY BIOTECH
Bringing the Future to Life
CRYPIC STUDIOS
CYGNUS MEDICA CENTER
DEIMOS INNOVATIONS
(science enhs shop)
DIANES DIAMONDS
DOWNTOWN MUSIC
New and Used Instruments
EDEN GARDENS
A Gated, Hero Protected Retirement Community
EL SUPER MEXICANO
Comida Cerveza Discoteca
ELENA
17th 30th
Morway Theater
EXARCH INDUSTRIES
FAMILY JEWELS
FIRST NATIONAL BANK
Of Paragon City
FREEDOM CORPS
Special Forces
FUTURE DYNAMICS
(Natural enhs shop)
HAIR CUTS
Mullets Affros Buzz Fades
HEALTH STOP
One stop shop for all your healthcare needs
HEROCORP
HOTEL GENEVA
ICON
IMAGE INC.
(natural enhs store)
INFRONT STEAKHOUSE
World Famous Smokin Cowboy Food and Fun
JUNK DEPOT
M.C. LOUIS INVESTMENTS
Planning your financial freedom
MAJOR FLANDERS
Fried Chicken
MEGA MART
Genetically Altered Super Foods
Super Prices!
Mega Service!
MIDNIGHT SHOW
Rise of the Council: The Broken Column Starring Fractured Dawn
MIGHTY MART
All Natural, Non-genetic, Health Food
MILITARY SURPLUS
ORION LABS
(science enhs store)
PANDORAS BOX
(magic enhs store)
PARAGON CITY PIZZA
PARAGON PARTS PLUS TOWING
PARAGON PIZZA PIE
Made Fresh by Made Men
PAWN SHOP
PHOENIX MEDICAL CENTER
PINNACLE APARTMENTS
Classic Fashion with Modern Amenities
Starting from a low $399,000
Paragon Realty Inc.
POCKET D
PORTAL CORPORATION
PPD (Paragon Police Department)
PRICECO.
Super Power Bargains Everyday!!!
PTA (Paragon Transit Authority)
We Get You Where Youre Going!
RED BEAST (power drink like Red Bull)
Bring out the animal in you.
RH
ROYALS BOOKS AND MUSIC
Set Your Mind Free
SCHEHERAZADE
SUBGENETICS
(mutant enhs store)
SUPER LANES
10 Lanes 12 Arcades 1 Bar Unlimited Fun!
SUT-TON SUSHI
THE DIRTY DUCK
Bar and Grill
THE GARAGE
Sales Parts Service
THE HUNGRY DRAGON
THE WIZARDS WELL
Comics, Games, Books
Imagine yourself a new life!
UP-N-AWAY BURGER
***************************
MISCLEANEOUS BILLBOARDS:
EARTH FOR HUMANS!
Lets keep it that way!
THEY ARE STILL AMONG US
Report any strange activity to the Vanguard
THEY COULD BE ANYONE
Be careful
Level 50s:
BlackSpectre, Dark Defender (Guardian)
Thorin, Invul/Axe Tank (Justice)
Volcano Juice, Fire/Stone Tank
Professor ?, Mind/FF Controller
Stone Forge, Stone/Fire Tank