Really depends what region you're in. I'm what they call a Christian-Democrat in Belgium. Personally that means holding slightly left leaning economic views (not across the whole line) and slightly conservative social views (again depending on the particular issue). But one could call others in socialist, green, liberal and nationalist parties moderate (depending on who it is, but generally parties here have slight to significant internal gradients in their views).
Even in a region moderates might have a breath of views, and universally, as a moderate you'll always have to explain your views since they will usually be a particular blend of nuanced opinions.
Being a moderate on the internet is difficult because expressing nuance is inherently difficult on the internet. But a good centrist realizes the person yelling at him for his views might turn out be quite agreeable when going out for a drink in person :)