There's a category of software that's rather difficult to define, or at least to name. Many term it as potentially unwanted applications or software (PUA/PUS). Companies pushing this type of software use every possible means to get you to download as many copies of their product as possible. Spamming, pop-ups, hijacking start pages, etc. Sound familiar?
What are we speaking of? Rogue anti-spyware and other so-called system optimization utilities. And they aren't just pushing one version, they're pushing many.
Some of these guys create one engine and then sell it under multiple names and interfaces. Their websites even look like they are copied from the same template. The sales pitch typically includes a "free" scan. The results of the scan are often doctored with items that you should remove or fix. Except in order to do so, you now need to buy a license.
If your product is legitimate, why do you need 30 or more names for it?