I think that both are profitable, depending only from what kind of business you feel comfortable to promote: I think that if you have some thematic website for some products , it's more easy to promote ECAs that sells that kind of products. For example : if you have a blog about beauty, make-up and also a twitter account about that, you can choose 3-4 ECAs that sells this kind of products and promote their offers. If you don't have a website, is still easier to promote ECAs products, to your friends and colleagues...
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I think that both are profitable, depending only from what kind of business you feel comfortable to promote: I think that if you have some thematic website for some products , it's more easy to promote ECAs that sells that kind of products. For example : if you have a blog about beauty, make-up and also a twitter account about that, you can choose 3-4 ECAs that sells this kind of products and promote their offers. If you don't have a website, is still easier to promote ECAs products, ...more