It sure looks like it to me. Notice how the flow of his conversation goes from on topic to something completely non-relevant that hits close to home on HN and i

It sure looks like it to me. Notice how the flow of his conversation goes from on topic to something completely non-relevant that hits close to home on HN and is quite relevant/important to the members here. The reply to that comment could be or is an example of how forum-sliding can be obtained with multiple accounts. How do we know that those up votes are legitimate too?