It's the policy for most of those stores (like Best Buy) to have their employees ask you if you need help every time they see you. My sister's husband used to work for some retail store in Northern California and every time he walked by a customer, being the same customer he just walked by and asked if they needed help, he had to ask them again if they needed help. Why? Company policy and they want to make sure every customer gets helped. They call it good Customer Service and honestly, it's what keeps Best Buy above Wal Mart in terms of technology. I hate Best Buy, I hated working for them, but my job was cool. (Warehouse) I just dealt with the bullshit managers and supervisors. (my manager was cool).