Although we don’t have access to a person’s gender when they create a search request, we can do some very unscientific experiments that give us an insight into the different ways men and women search. Take a search for shoes. We can see from the relative search volumes for “women's shoes” and “men's shoes” that women are much more likely to include a specific size in their search request, which men rarely do. Men tend to focus on other descriptors – colour, price or location. You could argue that this search strategy is more efficient because it helps them find the ideal shoe first and then they can let the shop worry about whether they have the right size in stock.