NEW YORK ( TheStreet) -- Now that Amazon ( AMZN) has acquired Quidsi, owner of, what are some other potential M&A targets?

Amazon purchased Quidsi, which also operates the newly launched, for $500 million in cash and assumed $45 million in debt. The deal is expected to close by the end of the year.

The Internet retailer has been on an M&A kick, purchasing online footwear retailer back in 2009 for $847 million.

What's Amazon's next acquisition target?
Blue Nile

Amazon also recently bought, a site that offers daily discounts, and has agreed to purchase BuyVIP, a fashion site.

Shutterfly ( SFLY), deal site Groupon, private-sale sites like Gilt Group and Ideeli, and auto parts site, have all been cited as potential takeover targets.

In light of all this, here's a look at other companies that could be on Amazon's radar....

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