Earlier today someone questioned a submission and its relevance to HN, saying submissions are becomming more and more like reddit, and "what's next, imgur links?".
http://news.ycombinator.com/item?id=2539824
In my reply I explained why he was wrong about that submission. And now, coincidentally, this is the first time I've seen an ingur link on HN. If only he hadn't deleted his comments, I'd know who he was and go apologise to him for downplaying his prediction.