Where can I find my posts in the Apple Support Communities?

Some of the other senior members reported a glitch in Subscriptions where only the last six days of posts are displayed. I just confirmed that affects mine. The mods are aware of this.

In the meantime, you can do a site delimited web page search:

Try this search string that limits the search to a username, year, and Apple Support Communities:

Username +"username”+"2010" site:discussions.apple.com

Replace "username" that is in quotes with yours, but keep the quotes. If you do not need a date search, leave that part out. You can add a subject in the same way the year is added in the example:

Username +"username”+"reset NRVAM"+"2010" site:discussions.apple.com

redinvd’s Subscriptions - Apple Community

or

Click on your name at the top of this post > Click "View profile: > Click "Subscriptions"