Thus the purpose of confession is so that the Church has the goods on everybody in the community.
This is such a load of rubbish, it's a crying shame that you got modded to +5 Insightful.
You can think what you will about the usefulness of confession, but you should find out what you're talking about before you show off your ignorance.
The fact of the matter is that if we Catholics had anything to fear after going to confession, we wouldn't do it. We're not as dumb as you seem to think.
You see, priests are not allowed to act on specific information they receive in confession in any way, so they don't. I have zero fear after I've gone to confession that the priest will reveal my sins to anyone. In fact, he's not even allowed to mention my own sins to me outside of confession. For that reason, most priests actively try to forget everything they've heard in the confessional.
But just in case you're uncomfortable (bearing your soul can be embarrassing), there's almost always an option to go to confession with a screen between you and the priest. You and the priest can't even see each other. So, unless you know the priest really well, he's going to have no idea who you are.
And, in conclusion: if a priest ever did break the seal of confession, his bishop would basically crush him to dust.