No they don't. But the internal HR people often do. I've seen them checking my account after I applied somewhere. The problem with the application process is

No they don't. But the internal HR people often do. I've seen them checking my account after I applied somewhere. The problem with the application process is getting past the initial HR. They don't usually give all the CVs to the hiring manager. This is the part I worry about. It depends on the company and the HR person of course but I know one and they told me it's far better to have one.