Idiom:
Pain in the neck ( something annoying )
Hit the book:
Niche
Differentiate
Hand-knit
Size up
Portal
Strike balance
General appeal
expertise
Find a niche. Knowing what product you want to sell is only part of creating a successful online store. You'll need to figure out what differentiates your services from all the other similar services people can choose, both in person or online. Why should a customer buy your hand-knit sweaters when they have 100 other online shops to choose from?