I haven't got into list building like I would like, but when I read about it I mostly just read about it in the 'Make Money Online' niche. My question is if you believe list-building is ALWAYS a great idea, or if some niches are just better for selling a single product, or for Adsense or for whatever. It almost seems to me that after selling one main product to someone, what else can you sell to them?
A list in:
Get ex back?
These seem like niches where there aren't brand new products and tools coming every day like there are in 'make money online, or even in stock trading or Forex.
What say you? Are ALL niches ripe for list-building?