T N. So sorry to hear about this. In looking at the site, there were a lot of red flags. It looks like a Chinese site, as evidenced by the cheap lettering / font they use and lack of contact information. Express-downloads is one of hundreds of scammy sites designed to get you to give them your money. Download sites are generally suspicious anyway - especially if prices are cheaper than you can find them anywhere. There may be legitimate download sites but they're generally through major businesses. What were you looking to download? I always look at CNet for software...

Walt L. This site is just a cogged site. You can input any words such as "dsfkajdkf adsfjdf" and it will give you some results. Don't believe it.

T N. I had no idea that was the term for that kind of a site - basically one with a front for something but actually only serves to take money, is that right? Good to know! Thanks, Walt.

Walt L. This site is actually serves to take money. And I had been swindled for more than 50 US dollars. Eveything seems to be very beautiful and true before you pay for it. But you will soon regret that everything is mendacious and deceptious after you take your money. They will give you a login name and password when you pay for it. You will enter another site 'www.premium-members.com' to get a cracked software '360share' after you login into the 'Express-downloads.org' site. Then you can install '360share' and download useless things supplied by them, and these things are definitely not what you want. Now, I don't know what I should do. The cogged site is located at Weehawken, NJ. Postal Code:07086. Metro Code:501. Area Code:201.

T N. how did you pay them? here are a couple articles that *might* be able to help (about getting your money back and about reporting fraud): http://www.sitejabber.com/blog/2011/01/26/the-chargeback-how-to-get-a-refund-on-your-credit-card-if-youve-been-scammed/
http://www.sitejabber.com/blog/2011/04/05/how-to-report-online-fraud-scams/