based on the structure and interface i think 30 comments per 5 days minus posts and upvotes are just a few and therefore cannot help any new member keep staying.

The new members need to do a lot of work or better, research in order to find communities and later on start their first comments and posting. To do this you need a lot of time and probably it's boring for anyone that gets here as they gonna probably wanna make a post and check a few others.

When i first came in here there were only a few people and only a few spammers so it wasn't that hard to find quality people and interact. Here is the key though.Interaction is the number one thing to survive in here except if you have a lot of money so for months i made over 15-20 comments per day and read over 20 posts. So a person that can only do 1/3 of what i did i think he/she needs to be damn lucky to stay and survive!