Delete's items from a given tumblr, 50 posts at a time

delete_tumblr.rb

require 'rubygems'
require 'tumblr'
require 'hpricot'

config = {
  :email => 'name@example.com',
  :password => 'secret',
  :name => 'your_tumblr_name'
}

tumblr = Tumblr.for config
xml = tumblr.read(:xml, :num => 50).content
doc = Hpricot(xml)

(doc/:post).each do |p|
  tumblr.delete :xml, 'post-id' => p.attributes["id"]
end