@GaryMahmud sites that use bots to scan the internet for new uploaded mangas or novels and uploads them on their own site.... basically a piracy website that steals other peoples hard work in translation for their own page views
most translators despise aggregators, however on the consumer side, aggregators usually have a LARGE selection of novels and manga to read from because they copy literally everything automatically, the downside however os they copy right away and only the first rendition, aka the translations are usually the worst on the internet since atleast the official translators sites will have an editor come in and clean up the translations
a good example of an aggregator for manga would be mangah*re, but im not going to link that crap, im not a fan of whats basically a pirate site, albeit pirates of psuedo-pirates (lets be real here, we didnt pay for these mangas which require payment in the original form)