keyplyr - 5:25 am on Mar 6, 2012 (gmt 0)
Yes, I'm aware of what a cache is and how it works ;)
All the mobile phones I see access my sites directly.
You'd not know this. Cached images, scripts, etc are loaded from mobile carrier prior to the request being fulfilled from the server.
Your scraping suspicions are likely due to bad agents not Yahoo. As I said earlier, whitelist filtering stops all that.