This is a great (and free) service:
– Upload an image
– The site removes the background
– Redownload the image
The results take seconds, work amazingly well, though I’ve found with more complex backgrounds, artifacts do creep in. Seems to work really well with head shots.
Take a look at what Apple’s own Pages can do. Image Alpha, click and drag anything you want to become transparent.. I find it works very nicely.
Safari refuses to go to this website. Hmmm…