A: 

Copy, Paste, Edit.

mcandre
Agreed, but not worth +1.
Justian Meyer
A: 

Yeah you can... Now with Facebook, you can "like" almost everything. You just have to implement it the way you'd do it for a page, or a quote. You can put it in your display loop/function...

I hope I was of any help. Regards from France ;)

Squ36
+1  A: 

If each product you want users to be able to like has it's own web page (like a product detail page), then you can setup the Open Graph tags on each page, and have buttons with a custom href pointing to them:

<fb:like href="http://mystore.com/product-1"&gt;&lt;/fb:like&gt;
daaku