I scanned the site. Didn't take the quiz. No disrespect to anyone but do you really need a internet dating site to give you voting advice?
I suppose that depends. It really isn't giving voting "advice". Advice is "an opinion or recommendation" and that isn't the purpose of the site. Instead, it is supplying information so you can see where candidates stand on various issues and how they compare to each other and you. And it is doing it as a neutral party. It is the first time I have ever seen something of this nature and caliber, so in a world of political atrophy and disillusionment, it is nice to find people trying to do something about it (of course, without things like instant runoff voting,
https://en.wikipedia.org/wiki/Instant-runoff_voting not all that much will ever change).
Next, not everyone can stomach listening to all the political drivel (I know I can't), and any tool to help cut to the chase and gather information is welcome. One might not know where all the candidates stand on specific questions or have the time or energy to research it all in detail. The option to present answers other than just "yes" or "no" does much needed justice to complex issues.
People also tend to gravitate toward information that reinforces what they already believe. I find that the site helps to expose people to different points of view that can be helpful with critical thinking. It is also useful when people get "blinded" by single issues and fail to take everything else into consideration. Speaking for myself, I have never found any candidate or party that matches a large amount of what I believe... it is always damage control.
Of course, it is not for everyone, and if you don't find it useful, that's fine. And in many cases, it might not tell you anything new (or might have gaps/holes in what is supplied). It is far from perfect.
Although it is easy to dismiss it when you haven't even tried it