I would like to add up to 40 editors to my blog. I have read in the forum that you can add as many as you want but when trying so below the box where to fill the e-mail addresses it contains the following message:
"Invite up to 10 email addresses and/or WordPress.com usernames, separated by commas. Those needing a username will be sent instructions on how to create one."
Is 10 the limit for the whole blog or per invitation?