Hello huffbw,
First of all I would like to say that I am very happy that my developed plugin resulted so much helpful to you and you like it ??
Please find answers to your query below.
1. Please download the plugin again and install, since I revised the code and now it is working fine on IE8.
2. This seems to be your custom need, can you please tell me where you will store meta info like address, city and state ?
3. First, thanks for your initiative to donate this plugin, since it will help us to put some more exciting features in it. Can you please send me a message on https://sharethingz.com/contact/ ( it is my website ) with your email id, so that I can tell you how to donate, since I do not have a paypal account setup and it will not be a good idea to reveal your email on support forum and donation method too.
Regards
Ankit