I like the flexibility provided in FormsCentral of being able to change the page dimensions of a form at any given time and it dynamically repositions and rewraps its elements. However, it would also be helpful to have a non-printing page break indicator (ie. letter, legal) for us to avoid awkard breaks in content. Of course, this functionality request is most useful and based upon the assumption that Adobe will be providing wysiwyg PDF exporting capabilities of FormCentral forms. (Hint)
We got the hint:-)
We just added the ability to distribute your form as a fillable PDF form and have all of the data submitted back to FormsCentral. I wrote up a forum post that explains it in more detail: http://forums.adobe.com/thread/994199
Give it a try and please send us your feedback on it.