I imagine that in not too long we will see different apps (steemit.com being just one of them) that read and write content to the blockchain and transact with steem. Let say, for example, a steem twitter-like app takes off where posts are limited to 140 characters. Within the context of that app, things look fine. But when that content is seen through steemit.com it would look really bizarre to see a ton of 140 character posts. I'm not totally familiar with how how steemit.com reads content from the blockchain.. so I'd love some clarification on this. Do all steem based apps inevitably access and display the same content? Is it possible to have multiple different apps (and thus communities) live on the steem network or will they all essentially be clients for steamit.com?