If you want to handle payments differently, you can disable them and instruct sponsors with detailed information on how you will accept payments...
Then, under each post, you will have metabox where you will search for sponsors to add..
Each time you add Sponsor to post type, the quantity is reduced...
If package has quantity of 2, when sponsor purchases sponsorship of that package, the sponsor will get 2 more quantities...
That sponsor will get quantity back which you can then use to assign it to another content...
You can use Widget and decide how to display them.
If the option content is set for example content= 1″ it will check for the sponsors of the post with ID of 1..
If you want to use logo, you will use logo= 1″ or to hide use logo= 0″.
If you want to show description, you will use text= 1″ or to hide, use text= 0″.
Interested in development.., check out SVN repository, or subscribe to the development log by RSS...
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