It's the feature that some other forums have. No, it's not possible on SCN. To be honest, I never missed it here, it can be extremely annoying. Contact information and regalia can be added to the profile and if anyone is interested they'll find it. And funny quotes can be shared in the status updates.
Also some folks confuse the forum posts with emails and start adding "best regards, John Doe" to every post. It's especially weird if the profile name is not John Doe.