Reddit accounts are worth it and few altcoin campaigns give you to pay per post on Reddit too. They have reddit campaign just like facebook, twitter and other social media campaign. Reddit is a big platform but it is not popular globally. It is mostly used more in few parts of the world.
But it is possible to participate in reddit bounty campaign with freshly made account. Usually you are accepted if you have more than 25 karma. This can be achieved by posting any popular picture from, for example imgur.com.
I would say that reddit accounts doesnt worth much, as karma isnt an indicator as high rank on bitcointalk.