1. In a Normal World and a normal Ad Network, Ad Network must block fake bot traffic, even ban websites that use bot traffic from their inventory. ( dont be sure that they do that .. even google don't block websites with bot traffic in 100% )
2. We can track clicks with trackers there many and the list is big (there are some free to start with) , Why do we track clicks - our ads, are for not losing money in ads, find if traffic is good = converts or fake.
3. About 0.000000001 or any other 0.00x ( lol ) its funny it's a marketing trick to go in deposit and older a campaign when you create a campaign ... you choose Geo = country, then it shows the todays current price ...( like 0.35 as an example , not 0.001) Now even a campaign allow you to put such a dirty cheap price, the traffic will be bad = very cold traffic = not converting = no sells = no leads = no money .... try it if you want to see your self
4. Ask your ad network manager how you configure your campaign and block spam - fake traffic before start the campaign.
I hope that was helpful