Feuds between neighbors have been known to get ugly. This one just got stupid. Earlier this week, Vincent Ardolf of Blaine, MN, confessed to hacking into Matthew and Bethan Kostolnik’s wireless Internet connection to send child porn and threats to politicians in their name. His neighbors had accused him in 2008 of kissing their 4-year-old son and called police. While no charges were filed, Ardolf’s animosity stayed. In February, 2009, he hacked the Kostolnik’s WiFi and created Yahoo! and MySpace accounts in Matthew’s name. There, he posted the child porn on MySpace and sent the pictures to…