So I read around and something clued me into the fact that when you set up a form in Google Spreadsheets, you can have the form emailed to you. In Gmail I went to the "show original" option while in the actual email that I received, and I could see the web-page code that had been generated to show the form in the email--which was regular code for an HTML submit form, and not an inline link to the form page. Well, that may be Greek to you or not, but all you need to know is that if you go down to the part of the original email that starts with the left triangle bracket before "form action="http://spreadsheets.google.com/formResponse?key=..." and you highlight through "/form" finishing with the right triangle bracket (which is almost at the end). You can now paste that code into "Other HTML" from the "Embed Widget" function, and your form will appear (and work!) on Wikispaces.