remember the case of the guy stealing the front lip off another guy on tsxclub?
if not here's the link.
http://www.tsxclub.com/forums/canada...l-members.html
let's say you had a heavily modded car. let's say someone wanted your parts. if they know your plates and dig up enough information on you. they could steal your mods.
or say someone hates you/wants to stalk you. i guess they could dig up personal info on you. that's how rebecca schaeffer got killed. because a stalker dug up her home address through the DMV(equivalent to ICBC).
http://en.wikipedia.org/wiki/Rebecca_Schaeffer
blurring plates is a safe measure, i guess.