Aequitas: man, your RealVMS plugin was the inspiration for this plugin! Thanks for the suggestions above. Currently I build the links (carried over from rss solutions), but I'll look at the API to see if there's a better way to have the aff link returned. I had a drop down for EPN or PJN - but since I never heard from either PJN or an affiliate in EPN via PJN I wasn't able to test it - so I removed it. I'll get those added in the next version along with international support.
I'll definitely be submitting to the Compatible Application Check. That will allow me to give people the option of NOT having to apply for a developer id (although i would still recommend it, since I'll be limiting to fewer than 5000 calls per user).
The 5000 call limit on the eBay APIs thats only before you pass the app check, once you pass the app check they boost that limit up to 1.5 million calls per day which is a huge increase.
With the API all you do when you return results is plugin the users campaign id and network id (Those of which I listed above) and then the URLs returned by the APIs are automatically populated with those links.
There is a tremendous amount you can do with the eBay APIs once you start digging into them, one of my newest developments with the API is The Auction House which simply enables sellers to list there eBay auctions on Facebook.
Now the app I linked too isn't suited for what I'm about to say but your's might be, if you know anything about the Facebook API, what you can do with your app is integrate it with Facebook pages as well which will enable your users to automatically have an auction appear on there Facebook page the second its added to there Wordpress post.
I noticed in your video demo you give the users a way to add the auctions to there post and the site is targeted to a particular vehicle, well if the user also has a Facebook fan page setup for that particular vehicle they can show auctions using the API in that Facebook page as well, that way all the fans of that page can see targeted auctions on the topic without ever having to visit an additional website.
Thats just a thought, I'm just tossing around idea's but I think I'm starting to hi-jack your thread a little too much so I'll stop posting these things around here but I'm always looking at tossing around ideas with people when it comes to the eBay API so if your interested hit me up on MSN ( phpadam@live.com ).
I used to have AIM but after a recent computer upgrade I haven't got around to installing it again lol.