India, July 10 -- Nobody knows the rules of the group chat. until someone breaks them. There's the friend who ghosts a conversation for three days and returns with a casual apology. There's the thumbs-upper. There's the person who makes a spin-off group, "just for planning" that ends up becoming the main group. Has this happened to you. Gasp! Is this you?

Texting etiquette is surprisingly murky for groups. Here's how to navigate the tricky questions someone might be asking about you.

Is it rude to ignore 200 unread messages? Kruti Jariwala, a copywriter in Bengaluru hasn't counted, but estimates that she's in 70-odd groups, for work, family, friends and "the inevitable 'how-am-I-even-a-part-of-this?' group". It's impossible to keep trac...