Global Voices has been aggregating and translating Chinese language blog posts on Tibet. Unsurprisingly, many Han are hostile to the Tibetans.
"But if you just think about it, just who was it that made Tibet the developed place it is today? Who set up the bridge between Tibet and the whole world? And who is it that sends qualified people each year from every sector to educate the children of Tibet with knowledge and culture? AND who is it that sends aid from every developed city in the motherland each year to assist Tibet? I think you seem to have forgotten all this……"
The main Tibetan solidarity sites:
Students for a Free Tibet
Tibetan Center for Human Rights and Democracy
I'll keep this updated.