yaourt - unsupported package + AUR dependencies

I try to install this package from the AUR. yaourt repository swears:

( Unsupported package: Potentially dangerous ! ).

And that's all, not a word of what exactly he did not like. The maintainer is assigned to the package. The x86_64 axis, in the PKGBUILD of the package, this seems to be spelled out. For the sake of interest, I tried to stage an opera - everything is smooth. Actually, the question is: how to fix it, or can you not care about this message at all?

Question two: does the maintener accidentally poke around add the dependencies to the package in some random way. Somehow I don't really remember that asterisk necessarily depended on postgres and sqlite. And speex seems to be optional. But it's true, and it wasn't in Arch. I tend to compile manually.

Thanks.

Update:With question #1, it seems clear. The link to the package sources is broken.