there's plenty of places to make money writing content online. Spend a day googling and you'll find lots more than I know of I'm sure.
Obviously I don't know your level of expertise but if you can boast some professional qualifications then why not try e-lance.
The other place I'd suggest is Digital Point forums. There you will find plenty of people looking for content to be written for their websites. People look for posts for their blogs, descriptions for their products, articles, press releases and just about everything else you can think of.
There's also plenty of writers already on there already though which means you don't get paid huge amounts. That said for a lot of your competition English isn't their first language and some of the quality is terrible.
I paid some guy in Indonesia to write some stuff for me. I paid $5 per 500 word article. I was happy enough with what he came up with, I'm more interested in the link than the content, but is was a load of old cobblers - https://www.ideamarketers.com/?articleid=1446797 - (it's funny reading it)
Anyway, you would obviulsy be able to charge more than that and there are also people who are looking for more serious, sensible stuff than what I was looking for.
hope that helps
