I feel a little dirty, but I used them and yes they are reliable.
It's a really gray area, especially for Americans, on whether or not it's legal; but I never had any problems with them.
What he means is that probably the site is based in a country (seeing that the site's based in Russia) where downloading is "legal" or that they won't really enforce their copyright laws, whereas in America, it's illegal to obtain music from a site without paying for it.
I hae heard that the record companies are suing the site for the lack of royalties paid to the artists. Apparently, some credit card companies have refused to fulfill payment. so be careful. Whatever - looks like that artists are not getting a dime from this....