Oh wow. Remember those "submit your link to these search engines" sites back in the late nineties / early 00s? Or "site of the day" sites?
What is old is new again.
Genuine question: how many of these sites (except for resources like Crunchbase) are actually visited by real people? I'd love for someone to test the impact of submitting to all of these.
You can use Alexa rank and other public metrics as a crude first-approximation of how many visitors a site gets. In my experience it's usually accurate to within an order of magnitude for sites that aren't incredibly big or incredibly small.
Here are the results for the first 10 domains on the list:
What is old is new again.
Genuine question: how many of these sites (except for resources like Crunchbase) are actually visited by real people? I'd love for someone to test the impact of submitting to all of these.