The value locked up in Ethereum DeFi projects has been exploding, with many users reportedly making a lot of money.

Using Ethereum-based lending apps, as mentioned above, users can generate "passive income" by loaning out their money and generating interest from the loans. Yield farming, described above, has the potential for even larger returns, but with larger risk. It allows for users to leverage the lending aspect of DeFi to put their crypto assets to work generating the best possible returns. However, these systems tend to be complex and often lack transparency.

No, it's risky. Many believe DeFi is the future of finance and that investing in the disruptive technology early could lead to massive gains.

But it's difficult for newcomers to separate the good projects from the bad. And, there has been plenty of bad.

As DeFi has increased in activity and popularity through 2020, many DeFi applications, such as meme coin YAM, have crashed and burned, sending the market capitalization from $60 million to $0 in 35 minutes. Other DeFi projects, including Hotdog and Pizza, faced the same fate, and many investors lost a lot of money.

In addition, DeFi bugs are unfortunately still very common. Smart contracts are powerful, but they can't be changed once the rules are baked into the protocol, which often makes bugs permanent and thus increasing risk.

While more and more people are being drawn to these DeFi applications, it's hard to say where they’ll go. Much of that depends on who finds them useful and why. Many believe various DeFi projects have the potential to become the next Robinhood, drawing in hordes of new users by making financial applications more inclusive and open to those who don't traditionally have access to such platforms.

This financial technology is new, experimental and isn't without problems, especially with regard to security or scalability.

Developers hope to eventually rectify these problems. Ethereum 2.0 could tackle scalability concerns through a concept known as sharding, a way of splitting the underlying database into smaller pieces that are more manageable for individual users to run.

Ethereum 2.0 isn't a panacea for all of DeFi’s issues, but it's a start. Other protocols such as Raiden and TrueBit are also in the works to further tackle Ethereum's scalability issues.

If and when these solutions fall into place, Ethereum's DeFi experiments will have an even better chance of becoming real products, potentially even going mainstream.

While Ethereum is top dog in the DeFi world, many proponents of Bitcoin share the goal of cutting the middleman out of more complex financial transactions, and they’ve developed ways to do so using the Bitcoin protocol.

Companies such as DG Labs and Suredbits, for instance, are working on a Bitcoin DeFi technology called discreet log contracts (DLC). DLC offers a way to execute more complex financial contracts, such as derivatives, with the help of Bitcoin. One use case of DLC is to pay out bitcoin to someone only if certain future conditions are met, say, if the Chicago White Sox team win its next baseball game, the money will be dispensed to the winner.