Facebook to front page in 2004: "16 points for being able to see who my friends are?"
Twitter to front page in 2005: "16 points for being able to write short messages?"
eBay to front page in 1998: "16 points for being able to sell things?"
It isn't about how involved or difficult a task is. Twitter wasn't "hard" to build (early on). It's about the utility of something, and this provides a great deal of utility. I don't mean my post to come off as a flame, as that's not at all what it's intended, but I, for one, find this very useful.
This is a useful feature by a site a great part of the hn users use sometimes daily, the more points, more visibility. It's an indication of its usefulness.
What's with people complaining about the front page today? This is really cool and it saves somebody out there some work, that's value and that's worth an upvote.