Question: Who did CafePress collaborate with on their online merchandise?
About the article "Grey's Anatomy", section "Merchandise".

Candidate passages:
CafePress, Inc. has six primary brands: its flagship brand, CafePress.com, wholesale division CafePress Pro, Imagekind, Canvas On Demand, Great Big Canvas and Canvas On Demand Pro.
CafePress, Inc. also partners with other businesses to provide licensed content on their site, and power online custom shops for large companies, such as ABC, Urban Outfitters and Peanuts Worldwide. 
In 2003, Ramsoomair designated CafePress as the provider of the "VG Cats" store; Ramsoomair soon ended the relationship with CafePress.
On June 16, 2004 Ramsoomair announced that he established his store on Hyperion Press.
Afterwards ZeStuff hosted the "VG Cats" Store.
As of 2008 Shark Robot hosts the VGCats store.
As of 2008, Ramsoomair is no longer affiliated with CafePress, but it still sells "VG Cats" merchandise on its website. 
Inkd was conceived and developed by Curious Office and Second Avenue Partners and is one of several companies in their portfolio.
Inkd was capitalized with a $1.7 million Series A venture round on September 23, 2008 by Second Avenue and an unusual but broad cast of well known digital luminaries to include founder of Expedia and Zillow, Rich Barton and former MTV & Viacom President Mika Salmi.
Kelly Smith developed the initial concept which closely mirrors another company he co-founded called Imagekind with Adrian Hanauer who is an owner in the professional soccer team called Seattle Sounders.
That company was the first online marketplace to buy and sell art prints.
It was subsequently sold to CafePress in 2008.
The basic functions of Inkd and indeed its graphical look and feel closely mirrored the first version of Imagekind when it was launched in July 2006.
Interestingly, the company was often called "The CafePress of Wall Art" well before CafePress chose to buy the company for themselves.
While Inkd sells flyer templates, newsletter templates, brochure templates, letterheads, business cards and post cards, the blogsphere is already drawing parallels to CafePress again and even to the popular Threadless tee-shirt market. 
CafePress, Inc. was founded as a privately owned company in 1999 by Fred Durham and Maheesh Jain.
As of February 2006, the site hosts over 2.6 million online shops with over 200 million products.
As of March 2011, CafePress.com has more than 13 million members and over 325 million products are available on the site.
In July 2008, CafePress acquired the specialist photographic art printing business imagekind., and in September 2010 acquired photo-to-canvas company Canvas On Demand to their platform of brands.
In June 2011, CafePress filed with the SEC to raise up to $80 million in an initial public offering.
On March 29, 2012, CafePress debuted at $19/share on the NASDAQ under ticker symbol PRSS.
The stock hit an intra-day high of $22.69/share.
On April 30, 2012, CafePress announced that it would move its corporate headquarters to Louisville, Kentucky from San Mateo, California.
On November 4, 2013, Courthouse News reported that Hawaiian Tiki artist, Brad 'Tiki Shark' Parker, was filing suit for copyright infringement against Café Press in respect of the unauthorized reproduction of his 'Forbidden Island' piece.
The story was picked up by local Hawaiian news channel KITV and through their YouTube channel.
In this piece, KITV reported that Café Press had stated they had removed from sale all items which featured Forbidden Island. 
CafePress, Inc. is an online retailer of stock and user-customized on demand products.
The company was founded in San Mateo, California, but is now headquartered in Louisville, Kentucky, USA along with its production facility.
In 2001, CafePress.com won the People's Voice Webby Award in the Commerce category.