I validated my site and I got this message: When will my ads start showing on other sites? Do I gain weight through just having the links on my site, or do people have to click them? If I choose "no follow" will that hurt my weight? Currently I have 5 links showing, can I copy that code over and over again, and have maybe 15 links on a page instead of the max 5? Thanks in advance.
Ads will start showing right away. You gain weight by running ads and also based on how many end users see them (impressions). Yes, using nofollow is treated differently than without. You can, but you will only get credit for a maximum of 5.