I need a user to navigate to a certain page that has a certain div full of useful text. Then click my bookmarklet and send the text in that div back to my server, which is
Here is an example to post text to a remote server. And you can print javascript in the remote server if you want to change the page you have the Iframe on to say something like success. Or a popup saying it finished. On the remote server you can print this to make a popup:
On the webpage you want to send information from make a form and Iframe like this.