I'm trying to tag multiple sites and/or content. Can I use the same comScore tag across all my content?

Yes, but please be sure that when tagging new domains that you have claimed your domain in the Manage Websites tab of Direct first. The comScore tag is customer specific and we encourage you tag as many of your web properties as possible. If tagging distributed content or ads, we encourage you to populate IDs to help improve reporting. Should you have more than 50 different IDs, please contact your Client Service Representative for assistance.