The reason is simple, you are in demand
****OK , short explanation, not 100% sure, but I found the least disruptive of saving valuable posts without including 50 more comments by others, was to Copy
all the valuable posts to a new thread in the How To Forum, appropriately named in reference to the posts. I assume every time a post of yours is copied to the new forum, this acts like a new post, however you will see the date , in this case March 2010. I have no control over notifications. You can go into user CP , View all Subscribed Threads, at the top, check the notification box, go down and uncheck the ones you want, at the bottom, change to delete subscriptions / Go, you can do whole pages that way.
If that doesn't work PM me, will work something out.