I wouldn't follow a crap ton of people, it just clutters up your feed usually with content that you could care less about. Get on Pinterest and start following a ton of *boards* that are in your field. Not only do you get follow backs, but you get to keep up with emerging trends in your industry. You'll know which of your products may begin to become popular, which ones may decrease in popularity, and when you should start coming out with new ones.
As far as your giveaway:
http://anyluckyday.com/giveaway-directoriesSubmit to all the free directories in that list.