Size of the list i dont think personally matters its the quality, i have a few lists, one of them came from the giveaways, if i offer a name your price i can make 1000 sales at $0.01 if i set up a product for $5 i might make a few sales and i get a host of emails telling me im way too expensive on the $5 product and that i shouldnt be charging so much lol, where as on my other list they know that if they need something i usually have it, and if i need something, e.g sales they usually offer as well.

Relationship building builds quality, having a list of 10 thousand from the giveaways might sound impressive but if they are not responsive does it matter how many there are.

James