Some time ago, Modlink ran a logo design contest - You picked a company from Uplink, any company, then designed a logo for that company.
The prize was a copy of Uplink, signed by the Introversion Software team.
Here you can see the results of that contest.

i-Squared Solutions, by GroovyPigThing, the winner of the contest
 
SIM Associates, by Angry Armadillo
 
Immutex Corp, by black orrifice
 
Moon Tech, by black orrifice
 
Andromeda Research Corp, by Christopher
 
Steve Jackson Games, by CowInParachute
 
Hummingbird, by Darkshine
 
Hummingbird, by Darkshine
 
Enzyme Tech, by elDiablo
 
Humming Bird Solutions, by elDiablo
 
Signi Corp, by elDiablo
 
Datalink Corp, by GroovyPigThing
 
ARC, by Hektik_Sniper (This is the best logo here! ;) )
 
ARC, by Kaaphi
 
ARC, by Kaaphi
 
Jupiter Corp, by Kaaphi
 
LevelSeven, by MegaDeth
 
LevelSeven, by MegaDeth
 
LevelSeven, by MegaDeth
 
Steve Jackson Games, by Nentash
 
Datalink Systems, by Red Dawn
 
Logic Networks, by Seth275
 
ARC, by Skiller
 
Eclipse Technology, by Skiller
 
Transcendant Labs, by Skiller
 
Focus Industries, by Sobek
 
Keytron Networks, by Sobek
 
Cybernet Software, by tabasco boy
 
Cybernet Software, by tabasco boy
 
Cybernet Software, by tabasco boy
 
ARC, by The Drop
 
ARC, by The Drop
 
Biometric Inc, by Toa (aka Miss B. Haven)
 
Centura Inc, by Toa (aka Miss B. Haven)
 
Signi Associates, by Toa (aka Miss B. Haven)
 
ARC Global Holdings, by WebcoW
 
Arunmor, by WebcoW
 
Protovision, by Whacko