obviously something with a very broad customer base like newegg is an optimal target. its easier to get pledges and its useful to more potential bitcoiners.
this is all very us-centered though. i wonder if we can get some good suggestions and possibly pledges for germany. it has a lot of bitcoins, so maybe a not-too-big online hardware store or supermarket might be convinced.

for hardware i would suggest notebooksbillger.de or mindfactory.de, for food and general goods i can only think of lebensmittel.de or gourmondo.de. if i get some good suggestions or pledges i think we can start a thread in the german forum.

i also wonder if there are any good targets, virtual goods stores or online shops that have, for some reason, an appeal to customers worldwide.

If Pottermore, JK Rowling's new online store, proves a success, it could provide a model for other authors and publishers and undermine the clout of Amazon, which dominates e-book sales.