New ask Hacker News story: Ask HN: Do you ask for permissions before putting clients on your landing page?

Ask HN: Do you ask for permissions before putting clients on your landing page?
2 by throwawayadvsec | 2 comments on Hacker News.
Hi, I was wondering if you were asking for permission before putting your previous clients names/logos on your landing page? without a testimonial, just like: Our clients: Logo 1. Logo 2. Logo 3