i was looking forward to trying out your plugin, because nothing i've done seems to work with the list servers integration settings... it USED to work, but somewhere along the line it just stopped...
when i installed and activated your plugin, tho, i get this warning:
The plugin generated 13947 characters of unexpected output during activation. If you notice “headers already sent” messages, problems with syndication feeds or other issues, try deactivating or removing this plugin.
then in the settings page it get this warning:
File Permission Issues
We were unable to modify required files. Please ensure that /home/xxx/public_html/wp-content/uploads/ has the proper read-write permissions, or modify your wp-config.php file to contain your FTP login credentials as outlined here..
not sure what that means, but i'm not comfortable with changing my wp-config to include any of those potentially big security holes (as noted on the help page linked from the warning).
can you shed some light on why those settings are required? i've been running wordpress sites for over 15 years and never seen a warning like that.