If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.
The easiest solution is to just delete your current account and start a new one. None of your meatspace friends could then know which posts from [deleted] was from you or even that any of them came from you in the first place (unless they are an LW admin, but then I don't think you should be worried about them knowing you post here).
This solution also has the benefit of not removing valuable comments in old threads (which looking at your karma I assume there are many of).
You can still tell who wrote such comments by following the permalink and looking at the title of the page.