In Memory Of Jexhius:
Moejita asks: "What is this?"
Oreimo is about the entirely innocent and completely normal relationship between Kirino Kosaka, the titular impossibly cute little sister, and Kyosuke, her doormat of an older brother. Along the way various other anime stereotypes such as the childhood friend Manami Tamura and the fujoshi Sena Akagi join in, and various otaku-related hijinks ensue. The second season promises to be more of the same.
Moejita asks: "Should I watch this?"
If you're in this thread you don't even need to ask since you're already going to watch it.
Moejita asks: "Where can I legally watch this?"
Crunchyroll is your friend for 99% of legal anime watching, Oreimo included.

Oreimo is about the entirely innocent and completely normal relationship between Kirino Kosaka, the titular impossibly cute little sister, and Kyosuke, her doormat of an older brother. Along the way various other anime stereotypes such as the childhood friend Manami Tamura and the fujoshi Sena Akagi join in, and various otaku-related hijinks ensue. The second season promises to be more of the same.

If you're in this thread you don't even need to ask since you're already going to watch it.

Crunchyroll is your friend for 99% of legal anime watching, Oreimo included.