More and more small, independent Cafes and Restaurants are providing free WiFi hotspots.
Please check the map below for Cafes with free Wi-Fi in Manhattan, KS.
You can get Free WiFi Cafe Spots also as an Android, BlackBerry, iPhone or iPad app which stores the location of the Wi-Fi hotspots on your phone, so that you can also find them when you travel and do not have internet access. You can get the address of all cafes near your current GPS location or select a City / Neighborhood by name or Postal Code (Screenshots).

Also as tablet app: Apple iPad - BlackBerry Playbook - Amazon Kindle Fire - Microsoft Surface