Re. the invitation to join your Developer Directory, thank you, we'll definitely take you up on that a little later - we don't yet have any live sites showing the integration but we have two in development that should be live in a month or so.
Re. the Wordpress plug-in, we wouldn't be interested in that as such because we're developing our own on-demand multi-portal solution. Thanks for the link, though, as it's very useful to see their module. I think they've done it the same way we were planning to in any case (without an API). Basically, they've given users the ability to just paste in the e-Junkie product code to their UI, then the module does the rest, yes? This is exactly what I was planning.
In regard to what we'd want from an API to make it even easier, it's just the ability to programatically get a list of all the products in the user's e-junkie account. That way, when the user's managing the "shop" module of our platform, they wouldn't have to also log in to e-junkie to get the product codes, and there'd be nothing for them to cut and paste. They'd just be able to choose the correct product from an e-Junkie list in the UI of our module.