Hi Steve,
Thanks for becoming an owner!
1. Can the content of the response messages be changed? this would make the messages more personalized.
Yes, of course. On the "List Settings" page look for the "Edit" button next to the "Send welcome email on signup or when confirmed" option.
2. Can a 'close this window' button be added to these pages? apart from the confirm removal button the other windows leave you wondering what to do.
You can fully customize the HTML shown on these web pages. Browse to the page "List Settings" -> "Custom HTML". If you would like a unique set of HTML pages for your list, click "New", name the set, modify it, and save it. Then, on the "List Settings" page "Custom HTML" option (not page), choose your newly created HTML set and save the list settings.
3. Can the window that opens up be adjusted in size? smaller would look better.
You _can_ do this with some JavaScript on your web page/signup form.
Here's a useful
Google searchAnd here's a relevant
Q&A page (scroll down past the ads to the comments).
I would be willing to assist with this for a small fee of about $20.
Please let me know if you have any more questions!
Regards, DW