You have the chance to help AVH and help new players understand the game better and easier.
The Help button is designed to give players information about the room they are in. (For instance if they are at the market, it will tell them about the market, in a shop the help tells about the shop etc)
Some rooms do not have such information so they are incomplete. You can now submit text for those rooms, and if your input is accepted you receive a small reward, and the game becomes better. :)
Note: This option is for experienced players only (level 30 or higher). Spamming will not be tolerated, so do not attempt that.