http://news.ycombinator.com/newest
often and upvote what I like and what fits the site guidelines.
http://ycombinator.com/newsguidelines.html
Personally, I find discussions about what HN gets right
http://news.ycombinator.com/item?id=4399678
more interesting than complaints about what HN gets wrong.
I agree for the past day or two I've found things a bit boring but I totally expect a wave of really cool stuff soon, which has happened many times in the past.
It was always as boring (or always as exciting) with respect to the quality of the discussion and the posts.