> Another protip: don't name your images "banner.jpg"; "ads.js" and "analytics.js" etc are also not exactly great names.
This is good advice even if you are designing banner ads or intrusive analytics!
I often wondered how many ads get blocked by the very simple rules usually seen at the top of adblock lists: /ads/ etc. Ads vs adblockers is an arms race, and it seems like renaming the ads files to a random per-deployment name would have been the first escalation by the "bad guys". But maybe many developers of ad software don't even bother to fight adblock, preferring to optimize for users who don't use one.