I was wondering if anyone has come across or personally looked at lazy-loading ads? Take for example, a leaderboard at the top of a page. It uses a <script> tag which almost certainly does a document.write to put the leaderboard in that spot. Problem is, if their server is slow at responding it will slow down the entire page from loading... Has anyone been able to lazy-load ads without having any issues with, for example, the tracking pixels? Thanks!