East End Window is a great insider blog, written by resident Irene Madongo, about "life, news, people, and places in East London."
East London History gives historical context for the area going back 2,000 years prior. Find interesting facts about your sightseeing stops, like the fact that the Whitechapel gallery was the only one to have electricity back in 1902 — meaning their opening parties could last well into the night, whereas others in the area shut down at dark.
Get the latest real-estate happenings at Open-Shoreditch, a community-minded blog (and sometime activist forum) that tracks developments in the area.
The Hackney Podcast is a monthly radio program documenting the art scene.