A page that's been steady at around 15 in G has been missing on both Y! and AOL for over a month. If it was just Y! I'd have something to go on, but its absence also on AOL has me stumped. Any insights?
My site was recently missing from Yahoo and the Google fi data centre but visible at all the other Google data centers, I can only assume that Yahoo was pulling data from the fi data centre and therefore this was why my site was not being shown on Yahoo.
Maybe your site is not being shown at the data centre that Yahoo and AOL are using. Worth checking with one of the Google data centre tools.