What is better for advertising a service - many small sites or several large ones?

Question

Marketing

From what effect (increase in the number of regular users) will be greater: from several hundred small sites (groups in social networks, blogs, etc.) or 2-5 large ones (sites from the top 100 in the country where I advertise)?
If the question is incorrect, please indicate why.

Answer 1

If we compare hundreds of small venues with a small audience (provided that it is definitely there), then, of course, it will be better in the future. But for a quick and visible result, large ones are also needed. I would share the effort :) I took a couple of large sites and 50 small ones :)