1up! has built all the underlying technologies, has the relationships in the online publishing world and is working the business with clients.
Feed editors come aboard to provide their editorial work (gathering the headlines) and they do the production work (using the formatting doc's 1up! provides) to get the aggregate headlines posted.
If the editor formats their headlines, it's a 50/50 relationship, and so is the split on revenues. Each month a THRU1 client pays $20 for a feed, so the Feed Editor and 1up! would each earn $10/client/month.
1 client = $10/mo
10 clients = $100/mo
100 client = $1,000/mo
...and so on!
NOTE:
If the editor collects the headlines, URLs and the attribution details, then the deal is $5/client/month, as 1up! would need to provide staffing and will be doing the production piece of the editor's job.
Either way, the beauty is that the work a Feed Editor does for one client is the same as for hundreds, so a Feed Editor's revenue grows with the addition of reach new client and it does so without having to do any additional work.