Check out this link. This link provides links to several other websites that have relevant information about PhD admission in Economics around the world (mainly US though).The website clarifies that the guide was mainly written about US programs, it does nonetheless provide some information about programs outside the US. At least it makes you aware that there are good programs outside the US.
Interestingly the article also points out that, using some data, in terms of GRE score, Economics is fourth most difficult program to get admission to, after Physics, Mathematics, and Computer Science.
It indeed seems to be a very useful link. Don't forget this blog though :)