I don’t totally understand the question — what are you meaning?
There is quite easy tactic: I write a longer post. That’s it. OP here actually wrote a blog-post (in the meaning what blog nowadays means; not only a diary, log).
Or do you mean when I’m using Discourse and when WordPress. Well… it depends. And it doesn’t come from perks or limitations of platform itself.
For me using editor of WordPress is a way much easier and streamlined than what Discourse offers. I understand totally why it is that way (article writing vs. fast living forumposts), but it affects. I can do local links much easier in WordPress. With suitable plugin using tables WordPress is superior compared to really basic manual’ish markdown what Discourse offers. In WordPress I have real media library, and Discourse is lacking it totally. Drafts… well, let’s don’t take that route at all 
And still I use Discourse as a blogging platform too. But only when
- I do more or less diary/log type writings
- I expect conversation (where Discourse is overwhelming better than commenting of WordPress ever can be, with any solutions)
- I need good searching and tagging (what WordPress can’t offer)
I do mainly three types of texts:
- dog-related, and those are under WordPress because that site has really strong SEO-value
- B2B/tech-things, and here I’m using 50/50 WordPress and Discourse and the main reason is expectations shall I get conversation or am I just delivering facts and ideas
- hiking/paddling stories goes to Discourse, because WordPress gives zero extra value and ”risk” to get conversation is high
So, I don’t have any strategies. Well, perhaps one. If I’m trying to maximize my sharings and clicks I use WordPress every time. For some reason in my language area people aren’t too keen to click forum-links. ”Normal” sites are easier.
Why so? I don’t know. Perhaps the look of Discourse is a bit too… not messy, I don’t mean that, but perhaps slightly crowded on mobiles. In Finland desktop-selling sank some years ago and almost everyone is using mobiles. That means everything must design mobiles first and desktops comes when a developer has extra time
Or people don’t like forums because of low quality comments of tabloid publications. Or social media won this war. Or forums (all of them) gives kind of echoes from blog-hubs that everyone disliked. Or… I don’t know nothing, but perhaps forums expects commenting, but writing using mobiles is not a joy — WordPress based sites just offer reading.
Now I’m drifting away, again, but mobiles are the main reason for something I count as low quality content, like one liners, gifs etc. Somewhere those are wanted and liked, but I see it differently. And I’m not alone and when expectations are, when seen a link to a forum, that there is only a lot blinking gifs showing old jokes and twitter-style short comments… who would go there? And from other side — if/when Google sees every forums as Q/A-tech or corporal support enviroments, it will change how to show rearch results of forums. It can be not so appealing when that forum is something else than Q/A or support.
No. I don’t blame Discourse. But perhaps we should stop trying to do everything on one platform just because of administration? Perhaps we need every aspects — CMS, LMS, forums, e-commerce… — and those should served from different platforms and let designers say how all that packet looks and after that coders will do theirs magic.
But my point is that Discourse is a blogging platform like every platforms where one can create content and publish it.
Moderators — should this topic move from Contribute > Feature to Community Building perhaps?
(Sorry — there must be a lot strange sentences and typos… english is quite odd language)