I've blogged on and off for years. I would imagine if this SNL blog had a decent text editor interface, you could attract some articles. Bloggers like to post their work in different places, to attact different groups of readers.
A blog aggregator that gets viewed by more than about 50 people runs the risk of attracting trolls and spam -adding some babysitting time for whomever is responsible.
My favorite blogging anecdote; One of my posts on Open Salon was picked up by a popular websight and viewed by 53,000. That earned about $6 from Google Ads. woohoo.