[etrautmann]

Paying for a coffee and sitting in a cafe for an hour is rude? I try to be conscious of being a responsible customer by this is completely normal and reasonable in the majority of cafes I'll frequent, like Philz in Palo Alto, or any Starbucks anywhere.

[lhorie]

An hour seems fairly reasonable. I've seen groups of four people doing business meetings at coffee shops. Where I've heard staff complain is when someone buys a coffee and then stays for 4+ hours on a regular basis in a high traffic shop (like near the touristic cable car stops in SF).