Cake day
The anniversary of when a Reddit account was registered, marked with a small cake icon next to the username on that day. A simple, cozy community tradition that celebrates how long you've been around.
Mechanic: on the anniversary of the account's creation, a cake emoji 🍰 shows next to the name for a day; others tend to congratulate ("Happy cake day!") in the replies. Function: purely cosmetic and social — it rewards nothing, but creates small friendly interactions and a sense of belonging and seniority. Part of the same lighthearted community culture as karma and flair. A good example of how a trivial, "useless" feature builds community and makes a platform feel human. Similar "account anniversaries" have appeared on other services inspired by Reddit. Related to karma and flair.