On the Open Forum page, at the top, next to Post Message, you will see Search.

Open this function, and enter your screen name in first box.

In the Posting Day Range boxes, enter the OLDEST time first, then the NEWEST. For example, if you want to search for the last year, enter 365 in the first box, and zero in the second box.

There are some gaps in the BCN data base, due to several times when the site was attacked in the past. So occasionally you will get a post and the images will be missing.