The Sichuan quake has partially removed Tibet from the news, in a quantitatively quite relevant way.
Articles on Tibet in the New York Times archives:
From 1/Jan/8 to 14/Jun/8: 295 articles (1.79/day)
1/Jan-10/Mar (the day before the Tibetan riots): 31 (0.45/day)
11/Mar-11/May (the day before the Sichuan quake): 212 (3.48/day)
12/May-14/Jun: 52 (1.58/day, that is 55% fewer)
More numbers for those thinking the above is just what happens with “old news”:
11/Mar-11/Apr: 126 (4.06/day)
12/Apr-11/May: 87 (3/day)
So it is true: the quake has halved the news reporting from Tibet, from one day to the next.
World attention on Tibet is in the meanwhile decreasing. During June, there has been just 1.49 articles/day on Tibet.