I was on vacation with my friend John and he asked me how I used the favorite button on Twitter. I told him it is a way to tell people that I’ve seen the tweet when I do not want to reply.
I use it in two primary ways. To signal that I saw and liked a tweet. And to signal that I saw a tweet to the person who sent it. The two are different only in that in the second case, I probably did not like the tweet but I still wanted to acknowledge it.
I really like super lightweight engagement gestures. I am bombarded by stuff coming at me all the time. So if I can acknoweledge something publicly without having to do much work, I get a huge amount of value from that.
Bumping on usv.com and upvoting on disqus are like that too. Because the identity of the bumber and the upvoter are on display publicly, they are an efficient way to signal that you saw it and liked it.
I am going to try to upvote more on disqus. As I reply less and less in the comments, I need to upvote more and more. I will make an effort to do that.