Good tech communities?

What are some nice link aggregators?
Y combinator: too autistic and 100% emotionless robots
Reddit: soy puns, thank you kind stranger
W4c: extremely dead
Slashdot: badically newgrounds now

arxiv
arisuchan
unironically, github
lambda the ultimate, every now and then

>>4
it is sad that c2 is effectively dead
the federated wiki
is just a meme