I'm sure police (and doctors, and psyche students, and anti-choicers, and a host of other people) do monitor this site. And even interact on it. I doubt it's the police's top priority as 99.9999% of the people here aren't out to cause harm to anyone other than themselves. And in many jurisdictions, suicide isn't even a crime anymore. Most western countries have some degree of free speech, and that's exactly what's being exercised here. As long as you're not posting about wanting to take your own life ALONG WITH 5000 others by planting bombs in some skycraper, you should be just fine. Remember talking about something is NOT the same as actually doing something.