In keeping with the times, we have reformatted the field for a Twitter handle on our PM Member Profiles to accommodate a full range of social media monikers. Using the tools on the Your Account page to edit your profile, in the Contact information section, look for the renamed Social URL field to update your information. You will need to enter the full URL, but you can link to Bluesky, Instagram, etc. as you wish. (We are happily posting publishing news again on Bluesky at https://bsky.app/profile/publisherslunch.bsky.social.)
