For updates to older tickets, I know that I use my profile to see the questions and ideas, etc that I have interacted with.. (for me that is a lot).. if I want to see my own, I use the "user contributions filter" to search for items I authored...
Email updates for older posts are also really helpful... if something is revived, or someone posts a follow-up in an older thread, I can go right to it via the link in the email.