I would say that no matter what, earning hundred dollars daily from writing is a very tough thing. It's almost impossible. Even if you are writing for good paying article sites, you can't write such quality articles so frequently to get paid that amount. And with paid to post forums, hundred dollars is just impossible. You can make that amount in a month if you are working well on paid to post forums only.The maximum earning from writing forums per day can vary greatly and is dependent on several factors such as the writer's skill level, the platform they are writing on, and the amount of content they produce. Some writers can earn anywhere from a few dollars to hundreds of dollars per day, while others may not earn anything at all. It is important to note that earnings from writing forums are often not consistent and can fluctuate greatly