I block out my license plate because people on the internet search and take pictures for any number of reasons that end up on ebay and all over and you just never know what could happen. I personally don't make an effort on all pictures though.. I could care less mostly.
Anyone here been in the situation where your car was sold online without you knowing and you got tracked down by the license plate number in the picture and you had to legally give up your car? It has happened, and will happen again.
I guess we can come up with hypothetical situations all day but the funniest is poeple on the internet that are a total douchebag to others on the internet and give out personal information such as a license plate to find you. You never want to find out the power of the internet when it's not in your favor.
2008 Sky Redline 5spd Techno Grey - Nice Weather
1999 Mitsubishi Montero - Crappy Weather
1992 Isuzu Pickup - Zombie Apocalypse