What decided it for me with jerk was how aggressively it pushes credits at you.
I gave the site about 2 weeks before I formed a view, mostly watching how present the moderators actually are.
If you're only browsing, it's fine. The moment how much control you get over who sees you matters, it changes.
The reason I stopped recommending some of these is how many profiles logged in this week.
Rewriting the opening line did more for it than a month of tweaking how much of the base is genuinely looking.
Would anyone recommend jerk to someone starting from scratch?
Different crowd on how Datebie handles it, which suited me better.