I usually share my Splinterlands and Rising Star posts in reddit. I also do in twitter but I'm not a premium member.
https://www.reddit.com/r/RisingStarGame/comments/1g0a3ki/rising_star_opening_12_packs_and_account_progress/
https://www.reddit.com/r/Splinterlands/comments/1g0f6q2/splinterlands_social_media_challenge_commander/
https://www.reddit.com/r/Splinterlands/comments/1fzwx87/the_peoples_guild_challenge_the_new_player/
https://www.reddit.com/r/Splinterlands/comments/1fyth6o/splinterlands_battles_commander_slade_and/
https://www.reddit.com/r/Splinterlands/comments/1fyc0n1/spending_glints_for_reward_chests/
RE: HivePosh Impressions Contest