Add part about PCB problems and workarounds

Hacks and fixes 
Bike shed?

Other places that uses thru-hole, just to mention some.
http://www.littelfuse.com/products/fuses/axial-radial-thru-hole-fuses.aspx
http://www.metz-connect.com/us/plugs-jacks-pc-boards/usb-thru-hole
http://hackaday.com/2014/08/21/smt-and-thru-hole-desoldering/
http://www.foxonline.com/thruhole_crystals.html
http://www.ironwoodelectronics.com/products/sockets/thru_hole_socket_accessories.cfm