Disclaimer: I'm one of many curators curating for Curie. However, this post is purely personal opinion.
Firstly, you should absolutely support all curators and curation projects on Hive. Given how the current system is, and how flawed it is, this is literally the only tool we have currently to retain content creators and consumers. I'd also recommend supporting curation projects that focus on comments, as that'll also retain engagement, but at this time I'm not aware of any. Curie did run a comment contest, but that was funded by top 20 witness revenues and had to be discontinued when it dropped out.
By supporting curation initiatives, you increase the efficiency of engaging content being rewarded on Hive, which in turn a) Retains content creators on Hive; and b) Attracts new creators to Hive. One of the biggest complaints why Steem had such a high attrition rate is because people were demoralized by highly inefficient allocation of rewards. On the flipside, there was a big boom quality content and engagement in June 2017 because that's when curation was the most efficient in Steem's history, only to fade away with bid bots and irresponsible Steemit Inc delegations to scammy developers. This is just anecdotal evidence, sure, but it should surprise no one that legit activity on Steem historically has always been correlated with efficacy of curation. DYOR though, delegate to curation projects that actually curate effectively.
All of that is a long way of saying... If you're a whale and believe in the future of your HIVE, invest in Hive by investing in better curation. I'd recommend checking out @c-squared as a promising project that can do with some large delegations.
OK, now back to specifics. Maybe you aren't benevolent, and don't care about the big picture, you just want to make some money short/medium term. You can still make big money while at the same time supporting Curie.
How? It's pretty simple, get a fast voting bot, follow @curie. Every vote @curie makes, is followed by a ~2 million HP trail from Hive.vote (sometimes more, sometimes less, but that's the average). Now, Hive.vote is a great service, but it's trail follows pretty slowly, and it takes several minutes for all the votes to get in. That's it, that's the secret, get your vote in before Hive.vote's trail comes in, and you're frontrunning the largest trail on Hive (at least, according to Hive.vote). Curie focuses more on undervalued posts and undiscovered authors, so the curation rewards potential increases that way too. No one seems to have caught on to this yet, so there's no competition. This is actually an old trick from back in the day in 2016, where the likes of laonie and wang were competing tooth and nail to be the first in line to follow @curie. Obviously, the trail is much smaller now than in 2016, but like I said it's still one of, if not the largest frontrunning opportunity on Hive currently. I will note that even if you're trailing on Hive.vote, you'll still get a pretty nice curation reward, due to the large trail, but to maximize your rewards you'll need to be front of the train.
What kind of rewards can you expect? If you run a fast bot that can follow @curie within 3 seconds (I can tell you from experience that this is easily doable on a cheap VPS), you can earn at least 15 HP per month for every 1K HP you follow with. This is an APR of around 20%, well above any delegations to shady bidbots and the like. At the same time, you get to support a curation project with multiple curators curating across a diverse range of communities. And the best thing is - you can continue using your HP! It's not delegating to anyone, you're simply following the trail. Do note, however, that the more HP you follow with, the more you have diminishing returns, as the proportion of your vote contribution on the post decreases. Also, if people actually listen and act upon this post, then there'll be increased competition for front-running.
Now, the question remains is - how do you run a fast bot? I'm going to leave this bit to you. I'll say, though, that there are plenty of options - there was one on the trending page just a couple of days ago. A little research will go a long way. Or if you know some basic python, you can make your own bot with hive-py.
Does all of this look too dicy and you want a safer way to support Curie while at the same time making a decent income? No matter, you can delegate to @curie through Dlease, netting a guaranteed 9.16% APR over a long period of time. Feel free to get in touch with svemirac#8984 over on Discord, he'll set you up with a Dlease delegation for as high an amount as you'd like, for as long as you'd like.