Potential Feature Discussion: it would be great to be able to use the web services interfaces of other web sites to extend the functionality of Informl.
There's really two flavors of this: arbitrary web services that we may want to leverage; and RESTful interfaces that can be accessed using ActiveResource.
It sounds like a good idea to have pages associated with foreign web services that provide (clean) RESTful interfaces to their data. We may be able to associate a resource with a page and then treat it like any other page that has forms and submissions (tables and rows). This would require some code and data base content to keep track of the mapping between the resource and the page. We may want to have an admin interface for making/breaking the association.
There are web services for lots of things on the web. In particular the integration shown in WikiCalc is really interesting. These web services don't necessarily follow a RESTful interface (eg. SOAP, XML, ASP).
Some alternatives for doing this are coming up with some general method of describing the interface to a web service or having specific Informl extensions for each service, which would require programming...