I always try to return congratulations when I can, and if I have the time I tend to congratulate everyone on my friends list

Don't forget:

Stroke 5 Xanthos a day to receive 10 energy points to your newest horse or win a horn of plenty

Answer one of Archimedes' questions correctly to earn an aging point

Congratulate 5 Topaz a day to earn 50 equus for each one, and many even 10 passes!

If you defrost Frost you have a chance to win Hypno's Blanket