Photoshop: Blurring edges of a cut image

To all those experts in Photoshop, I wonder how after I can get a image from a photo, I could like to blurr the edges, so that when you paste to another background the edges dont look so sharp and artifical. Prehaps what I want is, that it blends well with the new background.
Is there a easy way?

Use "feather" to adjust the join on selections. Look under Select>Modify.

Regards,

Create two documents the same size. Copy the one you want on top and paste it onto the second one.

Create a layer mask by clicking the little square with a hole in it on the bottom of the layers palette.

Change your colours to black and white in the main tool palette.

Using the brush tool, paint black over the areas you want gone. (It looks like you are erasing the background of the first image.)

If you make a mistake change the colour to white and put it back. You can get some very very subtle "joinings" this way.

RSG

Wow!. What a nice way.
Thankyou

I am also fooling with the extract command.
It seems to work well too.