Thank you for writing a post about steemblr, I never thought about it as an alternative to the zappl, rather for tumblr, when I started development zappl still existed. But looks like it's an alternative now.
Individuals have the option of using Steemconnect or you can post using an email.
For this feature you need to wait 2-3 weeks, its still in development.
Steemblr will become hybrid app with blockchain and non blockchain post. Hopefully it will bring more users to steem.
Cheers!