I still think there's an opportunity for something better-than-Twitter, IRC, RSS in the mobile space. Twitter is SMS mobile, but has what is honestly a shitty client experience on (everything, but especially) mobile.

I wish someone would do something with the same initial goals as Diaspora (self-control, etc.), but focused on mobile, with ease of use on mobile as the goal. Snap Chat is kind of a step in that direction, but I'd rather have something where users got to explore the continuum of ephemeral stuff (like Snap Chat) to semi-permanent (like Twitter) to more permanent (like a blog, designed to be referenced in the future) to really permanent (publishing).

When Firefox 4, the first version without the button, was released, Twitter had already 200M users.

I feel like this is a case of the tech savy being somewhat removed from the majority of the web's consumer base. Honestly, I've had a surprisingly large amount of trouble explaining something like IRC/RSS to someone like my parents or my non-techy friends. I try to explain that IRC is just like any other chat room, but honestly it's incredibly scary and unattractive to most people.