HP Photo Creations is the one.
iMac is a fantastic photo and video editing computer. You can do some photo editing with the built in iPhoto and some serious video editing with the built in iDVD.
Photo manipulation software is basically an advanced Photo Editing program
The name of the Corel program that is used in photo editing is called Corel Draw or Corel Paintshop. Some other photo editing programs are: ACD Systems, Adobe Photoshop Lightroom 4, Apple Apeture 3.
There are several sites that offer free photo editing. You can try www.picnik.com/ or picasa.google.com/. Both are excellent.
My personal favorite software for photo editing is The Gimp this is a free/GPL program which is east to use and excellent for photo editing.
photoshop
Windows Live Photo Gallery is the free image editing software from Microsoft. It is a part of Windows live suite. It comes with easy photo editing features, and lets you upload photos to facebook.
The Capture One computer program is used for photo capturing and editing. It is a program which does a good job of importing digital images and specializes in the editing of them.
One can acquire a free photo editing program by visiting a few sites that offer the free software. PC Mag and Tech Radar are a couple of the many sites that offer the service.
Using a photo editing program such as photo shop, you add something called a "watermark"
photoshop online and picnik
Yes, PaintShop Pro is a photo editing program.