Here are some of the "secrets" some HL players try to sell on HorseLand. Most of them are really very simple, so I don't suggest actually paying for them. I have not tried out all of these secrets, some of them may not work, so please do not blame me if they don't work for you.

The ever popular Money Secret - it's not really even a "secret"!
• Create a new account, then sell one of your horses to the new account for $10000. This will make you $10000 richer. Then sell your horse back to your old account.

Here's one that a lot of people want: the Talk Secret
• Go to https://www.angelfire.com/rock/hlsecrets/ for the talk secret. In the first box write your HL acount number and in the second write your user name. Then type your message.

To my knowledge, there are no point, training, age, or breed secrets that work. So don't waste your money.