Event Notifications

There is too much going on in the world around us. Some try to digest the entire flow of information; some, on the contrary, close down and ignore almost everything. But each of us has our own area of ​​interest. We try not to miss news and events from this area. Unfortunately, it is necessary to spend more and more time choosing bit by bit useful and interesting things. If you are waiting for the release of a book by your favorite author, then you need to look through store shelves or online libraries. If you are waiting for a concert of your favorite artist, then be kind enough to listen to advertising on the radio, or periodically go to the official website of the group (if it is and is updated). And there are many such examples. And I do not want to miss anything.

Recently, I use the site TVEpisodes.ru, which sends notifications about the release of new series (for example House MD)
The idea is very good, but I want to extend it to other notifications.
I thought about what I would like to know in time, without thinking, this list came out:
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- The release of books of several dozen favorite authors. Track on libraries is very tiring.
- Release of new albums of favorite music bands.
- Concerts of some musicians in a given city.
- Appearance in the movie rental. For example, I saw an interesting advertisement, and the film only a year later. I want to subscribe, so as not to forget.
- New House MD Series on torrents
- Continuing favorite games

At first glance, the information looks too heterogeneous to come up with a single method for its collection.
But if you arrange it as a service, and manually select news, then it can pay off.
Plus, there is a good potential for targeted advertising and cross-recommendation.

Maybe I invented the bicycle and this is already implemented somewhere?