Well its a very commonly asked question, there are many reasons why people steal images, there are even more ways to steal them, most commonly “right click save as”.

The long and the short of it is you can’t stop people as they will always find a way, most of the time its to use as desktop images but some people print them off or repost them and call them thier own work, or even reuse on their own web site without your permission.
In one respect it could be seen as flattering that someone thinks your images or photos are nice enough to keep or use but, on the other foot as a photographer or artist you personally invested time in producing the image and why should someone take that for free or worse still without asking (just plain rude!).

My blog uses an anti right click script ( GO ON TRY RIGHT CLICK) but even this can be got round if you really know your stuff, so I will be watermarking my photos in the future, I find this annoying to the viewer so I will try and keep it obvious but not destructive to look at.

Alternatively you can use a reverse picture serach engine which i have found TinEye and works well or if you want to know what people are copying from your website you can use Tynts Tracer Service .

Let it be known not only Big Brother is watching you.

Not everything in life is free but ask and you might be pleasantly surprised !

Hope you found this useful.