If you’re looking for specific comments by @beschizza then check his user page, posts category. You can get to a user page by clicking the user’s avatar, or typing their name in the search box.
http://bbs.boingboing.net/users/beschizza/activity/posts
(unfortunately the auto-close nature of so many topics here makes his stream a bit noisier than most…)
Note that when you are on a user page, your search is automatically scoped to that user first, but will broaden if there are no matches in posts that user made.
Another way to do this is to visit the topic in question, then use the expanded topic map at the top to either:
- Filter the topic to particular users (you can click multiple times)
- Filter the topic to just the “best posts”
I have circled the relevant areas in purple.