(1) I don't know much about Binance, but Binance scamming is exactly what I'm concerned with. I don't know them to be trustworthy, and there are plenty of operations that present a good game but turn out to be a mess, so I don't give someone the benefit of the doubt just because they talk a good game. I'm wondering what actual security there is, since one of the few things I know about them is they relocate jurisdictions a lot to avoid regulatory oversight. This is a major red flag to me.
Binance is a number 1 exchange according to almost every statistics and at the same time, this is the company that owns coinmarketcap. Binance scam in a crypto world would be like a scam from Deustche Bank in fiat world.
(2) Yes, if the coins depreciate more than the interest you earn, you lose more overall. That's a concern on the investor side though. I'm wondering how Binance can afford to to pay such high interest yields on deposits (the denomination doesn't matter, anyone paying interest has to make more than the cost of deposits otherwise they lose money). So from Binance's perspective, if they're paying 45% APY on deposits, they have to earn more than 45% APY equivalent on those deposits otherwise they're just giving money away.
I think that this is announced by Freebitco.in and they have backed this promotion by giving Binance the supply and the money to run it. There is no way Binance would do it on its own for freebitco, so, 45% APY is really guaranteed.
locked funds mean something like this: When there is a high demand on thing X and it's not available, the price on thing X increases.
I don't think it's as simple as that in reality. If you look at the FUN token price you'll see it didn't change since the beginning of this offer and is still at 49 satoshis. Usually this kind of investment is offered more to create a craze and to attract new investors than to deter previous ones from selling them.
Yes, it's done to attract new investors and increase the popularity of coin too. It's advertisement when millions of people see the banner on Binance App or website and it increases the awareness of the product.