I now understand (I think) what your company offers. But I didn't get that from your website, but from your competition. You seem to offer usability testing of a website, not beta testing of a software.
I looked at your 10min video on your home page. You call that beta testing. As a former software company exec, I would never refer to that casual playing with a website as beta testing. For example, in your video, the guy does attempt to see if options function. E.g. he selects "large" for the shirt size, and then declares that the function works.
But a real beta tester would meticulously check every single option against every other single option. He would click on every size, every color, every permutation of options to make sure they all worked, and every combination of choices worked, without causing the software to freeze up or crash.
So if I were thinking I was paying for a beta test, and all I got was what that guy did for 10 minutes, I would be very disappointed in the service I got from your company.
So I think you have an identity crisis as to what your actually offer. The other sites do a much better job of describing that.
Elsewhere on your site you refer to "apps". So do you test apps or websites?
Also, I didn't see it, but do you offer any quality control as to who the testers are that you use? Or are they just random people who sign up to be "betatesters"? There's nothing wrong with using people off the street if that is in fact what you are selling. But if you are selling someone who knows how to really test stuff, that's a whole different thing.
Sorry to run so long. At the risk of sounding repetitive, I think you have an issue with what exactly your company offers, and to whom. And I think a lot of that revolves around you saying you are providing "betatesters" when I don't think that's really the proper term for what you are offering.
PS: And I still don't see the purpose of those "featured startup" boxes on your homepage. You said they pay for exposure, so are they essentially paid ads that have nothing to do with your product? When I click on them, I get very abbreviated notes on the startup, and then there are comments on the right side. The purpose of those blocks isn't clear at all.
And since those blocks take up a good portion of the key real estate on your landing page, they should be dumped or moved away and replaced with something that explains what you do and how it helps your customers.