Still having this problem?
We have had reports of IE 7 and 8 not working as well as Firefox or Chrome or other browsers.
1. Feature coming soon.
2. No, but you can use your own domain. Click the edit icon then park domain. You can also create widgets to run AJ offers on your own hosted sites.
3. This can be done by using HTML in the text editing box. Are you asking about policy, or technology? I am unaware of any policy against adding links.