You can also add the campaign name here such as facebook_offer or summer_sale or new_product_lineup or anything else for that matter. Be sure to separate the spaces with underscores. And, if you're placing ads on Google, YouTube or any other platform, and you're bidding for keywords, place the campaign terms in there, separated by plus signs such as best+running+shoes or best+mens+polo+shirts or anything else for that matter.
Cafe Press: This website allows you to create digital designs that can then be sold on the platform. You'll earn a commission for everything that sells and you'll never have to deal with logistics like printing, warehousing and customer service. If you have some graphic design skills, then this is a great potential source for your web-based income.