I guess on one of those people who posts lots of links.
I post links to provide sources if I make a claim about statistics. I hope the sources I quote are reliable - they're usually the ONS, offical government sources or a think tank, such as the Joseph Rowntree Foundation or Resolution Foundation. One is leftish and the other rightish, but both use proper researchers and reliable sources.
Sometimes I post links to "experts", which I do so that people know something or other isn't just my hare brained opinion.
I also post links to articles, which are too long to summarise and I think people might find interesting. Professional journalists are (or should be) more articulate than I am, so linking seems the quickest way of saying what I want to say.
I don't consider myself a "left wing supporter". I have never even considered myself to be a socialist. I'm left of centre, although getting more angry and left wing with age, but I certainly don't fall into any category. I feel I know more about economics and politics than I did five years ago and I enjoy discussing my views. I have been interested in social history for ages and it's fascinating to see how history, economics and politics link up. The links I post, not suprisingly, support my views, but nobody's forcing anybody to read them.
Sorry if that makes me seem school ma'am-ish. I guess that's what I am and it's quite difficult to get out of the habit of trying to be rational and wanting to inform.