The installer from that site, installs a toolbar that will make you search in
http://search.conduit.com/ResultsExt.aspx?ctid=CT2619605, for getting conduit.com revenues.

More info about the site:
http://www.dondominio.com/buscar_whois/?domain=jdownloader.com

It uses social networks, but mainly facebook and taringa, to spread the site:
http://buscar.taringa.net/posts?q="jdownloader.com"
http://www.facebook.com/pages/Jdownloader/132403040131749
http://twitter.com/jdownloader2010
http://www.youtube.com/watch?v=4-0a6g5_2_w

Author(s) speaks Spanish, and this is the community where jdownloader.com is best spread as the official site.

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We need the spanish speakers spreading jdownloader.org, specially in taringa,
Email the hosting company, www.dondominio.com, asking the suspension of the site.