We just had a magnitude 6.8 earthquake (downgraded from 2 x 7.0 quakes) over the border in Myanmar. I was on the 4th floor of an old wooden building here in the north Thailand city of Chiang Mai that swayed a fair bit, but there was no damage here or elsewhere in the neighbourhood. No sirens to be heard either, so all seems fine here. I hope the burmese are ok too.
Edit: Only casualty in Thailand was one person who died on the northern border town of Mae Sai in Chiang Rai province. No damage seen in Chiang Mai or Chiang Rai. Myanmar (Burma) has confimed at least 75 dead and counting, with significant damage to remote villages and roads.