webcentric - 8:23 pm on Sep 16, 2013 (gmt 0)
I'm noticing today that a significant bump in traffic isn't resulting in pay dirt
I'm one that has noticed this but, I'm talking about increases in organic search traffic to an established site, not traffic to a new site or other kinds of traffic from new sources. Not sure about your exact situation but the source of the traffic (as relates to the quality of it) is obviously gonna factor in. Also, if the site or ad slots are new, as you know, it could take awhile for the the right ads to start showing up. I'm noticing drastic swings in CTR and CPC through ever increasing traffic volumes. CPC is a bit more explainable given the fluctuations in the ad market. The ad market is also probably somewhat in control of CTR as well. Two things I can put a bit of a finger on are 1. Single advertisers dominating the airwaves when no one wants to click on their ads and 2. A complete disconnect at times with the ads being served as related to the content on my pages. And both can happen at the same time.
Also, I'll keep saying this even though most here are mute on the subject. The new text-ad formats Google is using are creating a completely different environment for surfers. Ads look more like ads (or maybe less depending on how you use them).
Example (728x90 leaderboard): Title looks like a header now (big text, title not underlined). If you're not watching how these units look in different browsers, they could be having a very unwanted effect on your layout and overall strategy.