I run a career site and see more irrelevant ads(i.e. shopping sites) lately. I have been running Adsense ads on my site for 5 months. Never see so many irrelevant ads before. Is this normal for this time of the year? Any comments?
I see irrelevant ads on my site too, even on a relatively niche and optimized articles. I can't compare with the past, though, as I have just been running AdSense for 3 weeks only so far.
Compare to last month, my CPM is down 50% so far this month. Impressions and CTR is about same. I haven't change anything yet. Only reason I can come up with is that some advertisers pulled out. Any suggestions?
What is the theme of your site? A lot of advertisers spend much more of their budget in December than in January.