8OO8  Instead of shelling out the absurd price of $20 for this simple one trick pony, you could pay merely $9 for Tiger Cache Cleaner; it's an excellent system maintenance app which INCLUDES a pixel testing feature, along with other nifty, useful features not available in other maintenance apps. And it's also PPC/Intel friendly.

But if you'd rather piss away your $20 on Pixel Tester

3.4(and I can't imagine why), then the pleasure is yours.  
(Version 3.4)

8OO8  So, still $20(15 Euros) for this redundant little trifle..... a most pedestrian pixel tester, which is easily available for free from other developers, eh, Alpha Omega Software? Well, in the words of the French guard in scene 8 of Monty Python and the Holy Grail, "I FART in your general direction!". Feh!!!!  
(Version 3.4)

SYHARRIS  Another reinvention of the wheel(and a simple wheel, at that), RIDICULOUSLY OVERPRICED at $20 from a company that charges that amount for all their software, including (now get this!) a Startup Chime Stopper(I've been using the FREE and excellent "Psst!").

There are a number of FREE pixel testers that work just fine; just do a MacUpdate search.

Hey developer, I dare you to justify charging $20 for this....no, I double dare you!

The company's name is "AlphaOmega", as in the "beginning and the end". I guess the developer means the first and last word in software, no?

Well, it's the first and last word in CHUTZPAH!

Ya know, I think I'll avoid buying ANY software from this developer.....just 'cause I feel like it!

God, this really bummed me out.   
(Version 3.3)

MINIMARC  Don't waste your time. get a free product.  
(Version 3.1)

LOKHEED  You have got to be kidding. I might as well help that guy in Africa get his dad's funds out of the country...

Total scam. Free alternatives and the program has about 5 lines of code... if you count comments...

Pathetic attempt to try and get our hard earned cash. Do yourself a favour and save your money.

This guy should be blacklisted!  
(Version 3.1)

ANONYMOUS  Crashed on my Powerbook.

Anyway I'm not paying $5 for this, there are hundreds of free apps that do the same thing.

http://www.macupdate.com/info.php/id/10793  
(Version 2.10)

MR LE RED  Sorry, I forgot to copy the link: http://www.macupdate.com/info.php/id/10793  
(Version 2.5)

MR LE RED  Why pay for this when they are a simple straightforward program that will do the same for free?   
(Version 2.5)

ANONYMOUS  Give the guy a break! This software does what it says, you don't have to download it if you don't want to. And by all means, don't slander it. Im giving it a good score because it does what it says, and does it well.  
(Version 2.5)

ANONYMOUS  Don't waste your time with that.  
(Version 2.5)

GREGAN  It's a nice software anyway, if it is free will become more attractive and trust me many will down-it-loud. Keep going for the development.  
(Version 2.4)

NIGEL DARLING  Why should I pay someone $5 to help me discover there's one dead pixel out of the million-plus on my LCD, something totally irrelevant that's only going to make me majorly depressed, forcing me to shell out $500 for a new display, plus an additional $5000 in psychiatrist's fees?  
(Version 2.4)