It's never a bad idea to accept all the invitations you receive on LinkedIn, because you never know who might be able to help you. However, ff you’re in the middle of a career transition or have a lot of updates that you want to make to your profile, we suggest making sure your privacy settings are on. You wouldn’t want to ping the LinkedIn universe every time you make a change. Then, once you’ve finished your important updates, continue to connect with people and accept invitations.