This is what I would consider a significant measure of success - people wanting to talk to you (assuming they're actual messages, and not robocall spam). Whether they're from friends who want to chat, contacts who want to work with you, or just random updates about interesting things that for some reason someone thinks you should know about, having people out there think about you enough to fire up the dialler on their phone and try to reach you is pretty cool. There are so many other things they could be thinking about.