I guess we'll see if people find it useful - the point of this is: there is current NO structured meta-data about APIs out on the web and that will be needed if we're one day goingto find APIs with all their associated elements as easily as we can web pages today.
Hence the format http://www.apisjson.org (it's basically sitemap for APIs) and the search engine http://www.apis.io. The search engine is also open source so you can run your own, format is completely open.
So if we (3scale) get some benefit I won't be unhappy - but if more people start posting API info then it'll benefit everyone.
It doesn't offer anything useful? Really? I spent almost 80 hours hand crafting the APIs.json for this release. I'm building federal gov versions of APIs.io with this to drive traffic to vital gov resources, and working to priortize the APIs.json + Swagger for vital non-profit resources ilke DPLA. WTF have you done notastartup to further the API community? eh? Links please!!