Stephen Mayes, a director at the VII photo agency, recently made a splash in the blogosphere with an interesting interview featured on WIRED's Raw File blog, in which he expressed his view that mobile phone photography is a "pure implementation of the digital phenomenon", and that images made with these devices were not documents as such but rather a stream, or waves of visuals.
He also raised the point that the popularity of these images and the apps that make them are about a nostalgia for the past.
Although I am on Instagram, and use it and other apps quite frequently with my iPhone, I have yet to join the streaming aspect of it, preferring to take my time in sharing the images when I choose to, rather than joining the torrent. This will probably change once I figure out how to have two accounts on Instagram; one for my personal stuff and the other for my travel documentary photography.
That said, one needs to be careful with wily-nilly streaming, because the quality (or lack thereof) of the mobile images affects one's branding and reputation.
Whilst I grapple with this thought, you may want to sit back and get a feel of Hanoi's street life via my iPhone photography.