Why are these images being given away? What’s the catch?
There is no catch. Like most business that offer free content, we make our money from advertising. If you see something you like being advertised please visit that site. They will luv you for it and so will we.
How can I open these files?
If you have Adobe Illustrator 8.0 or above, you are home free. You will be able to move objects change colors, delete and add at will. If you don’t have Adobe Illustrator 8.0 you will need a program that can manipulate EPS, AI and/or PDF files. Anything from Adobe AfterEffects, Photoshop, InDesign, Cinema 4D etc. etc.
What’s a vector illustration?
It is the use of geometrical primitives such as points, lines, curves, and shapes or polygons, which are all based upon mathematical equations, to represent computer generated graphics. Huh? It just means that the images created in this format can be highly magnified without degrading.