The UX for interacting with Ethereum apps is slowly improving. The most interesting work going on in this space has to to with getting web3 available on mobile devices which is starting to make dApps useful on the go. This might lead to many more micropayment apps being developed. Best practices right now are centered around using your phone to scan QR codes to quickly add payment addresses.
Additionally, all these web3 providers who are developing browser based solutions are trying to provide a psuedo app store to make their platforms more useful.
Additionally, all these web3 providers who are developing browser based solutions are trying to provide a psuedo app store to make their platforms more useful.
Some examples I've been playing with lately are:
https://status.im/
https://www.cipherbrowser.com/
https://www.omise.co/go
A competitor in this space is blockstack who is pushing the dApp model hard: https://blockstack.org