Somehow can't reply under your post. By egoistic I mean that someone can continue profiting from the time you take to write posts or submit links without letting you participate with the HN users.
The [reply] button takes longer to show as threads get deeper. This is because deeply nested threads tend to be flame-bait and argument, and slowing down posting is meant to help with that.
Usually clicking the [link] button gives you a text box.
