I read in a webmaster forum that many members have been complaining about receiving irrelevant Google Alerts for their specified keywords. This became more pronounced over the holiday. Some members claim that these are from spam pages that have no mention of their keywords at all.
Well, I used to subscribe to Google Alerts too until I kept receiving alerts for old pages that do contain these keywords, but these are pages that I have already seen before subscribing to the alerts. When I subscribe, I had the logic that I would only be alerted to NEW web pages mentioning my specified keywords moving forward but unfortunately that did not happen.
It got so bad with the old webpages that were no longer relevant, especially with coupon codes of particular merchants, that I decided that I could do without these alerts. After all, they don’t help but just wastes my time checking those old alerts. LOL
I guess this is just one of the many Google products that is good but flawed even after so many years.