HR professionals who are in the niche of hiring, talent and recruitment will be familiar with the 'Open to work' badge on LinkedIn. A green 'flash' across the bottom of the person's profile picture, it shows that they are, essentially, looking for a role.
You might find it useful when you're searching for new talent. Or, like former Google recruiter Nolan Church, you might find it a bit 'ick'. Church said recently that the tag is the 'biggest red flag' to hiring managers, and that it can suggest 'desperation' on behalf of the person who is showing themselves as 'open to work'.