Shouldn't  promoting your site/service be in Service Announcement?  Or if the activity is being discussed, should it be in Service Discussion?  I have a neutral stance about your project but please use the proper board for your announcement /discussion.

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There are several way to know if the sites is trying to scam you.

You can first check the domain name.  It should bring an alarm if the domain  is named after some brand that actually don't have any relation to them
You can also check the layer of Url requesting our credentials.  There is a big possiblity that phishing may occur, some site intentionally resembles other legit site just to get your credentials.
Check the validity of the SSL.
Check the contact information, most scam site does not have contact information.
Check for grammars and spelling, legit company will always want to show professionalism, so even if they are not native of English, they will hire for the content of their site.
Check terms and agreement.
If they are shipping item, you can check their shipping terms and agreement and return policy.
Most of all check their customer support.

Here are some pointers that may determine if the site is a possible scam or not.