Yes. Invest = Bet in this case, because that is basically what you're doing, even though you risk losing your STEEM/SBD. Especially with Magic Dice, as MD is the only gambling dApp out there with daily dividends so far. (From my understanding). And the daily dividends are based on Tokens + Total amount of STEEM wagered per day.
I'm writing a post about this right now, so I should have it ready within an hour or two.
Thank you. I have pending rewards of 0.008 STEEM / 0.000 SBD because of that. lol. :)
It's actually quite a dangerous thing because I've got 200 liquid steem atm!
Haha yeah, I know the feeling...
Just take a look at the "rare wins" section. I'm still there... It's easy, quick and fun. When you score something like I've done, you keep going. Suddenly, you're out of luck and STEEM. lol.
I've had a blast though, and every STEEM I've spent has been a good investment. I'm up more than 3K STEEM in profit.