Yes, JEM allows you to sell digital or downloadable products.  You can set expiration and restrictions for each downloadable file as well.

Yes, we do.  we pay 30%  commissions for each and every referral you sent. 

For the one off license, you can make $149 on a one time sale, with the leased or hosted license, you can make 30% commissions every month as we pay recurring commissions on those licenses.

You can signup here

JEM comes complete with a shopping cart, affiliate marketing and content management system.  It also has a FAQ module, and help desk ticketing system.

Yes, JEM supports membership products which can password-protect folders for you using one login.

JEM supports selling digital and physical products as well.

The free version is the same as the licensed version, except it is restricted to 50 users.  You just need to purchase a license key to unlock it.

You can download the free version of JEM here.

Yes, JEM has full search-engine friendly URLs, as well as support for 301 redirects for every affiliate link generated.

JEM also has an option to generate XML site maps for full search engine indexing by Google, Yahoo, etc.

No.  You can use it as long as you want.  It is just limited to 50 users in the database.

The system requirements for JEM are listed here

JEM comes in 2 versions: free and licensed.

The free version is restricted to only 50 members.  Once you reach that limit, you must purchase a license. 

The licensed version has no limitations.  You can add as many members/customers/affiliates in the system as you want.

JEM has full documentation here