WiFi Fact #2 Many User & 1 User

This fact is full based on my personal experiences, when ied fitri day my one and only router suddenly crashed when there are more than 10 people try to access the internet simultaneously(download and updating their laptop/phone like hell). its like so many user try to kick the router ass.
so i come out with this idea, fully extend the wifi channel from 20mhz, change it to 40mhz. it work well for me, as i never forget to check another wifi in the channel. and seek the far, least amount of wifi on the channel.
As it summed up, here my tips in the User fact:

1. Change the wifi channel range, from 20Mhz or 20/40Mhz. change it to only 40Mhz
2. Seek the least/empty channel, here i will explain how to search empty wifi channel.

But, If your intention is not extending the range is but only to provide internet access to many users, i will suggest you buy a router with 6 antenna and has built in processor is a better choice.
However, you kind of share your wifi in the neighborhood, and have intention to share your internet with a few family/friend living across the street, an antenna booster is a good solution.