gistfile1.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'sequel'

DB = Sequel.sqlite('signups.db')

signups = []

DB[:signups].all.each do |signup|
  if ['rubyslava', '@rubyslava', ' rubyslava'].include?(signup[:code].downcase)
    signups << signup[:email]
  end
end

winner = nil
Random.rand(10000).times do
  winner = signups.sample
end

puts winner