The sample box craze is still going strong, and the latest website to cash in on the growing trend is building on the community mentality. For those who are hoarding unusable or duplicate products leftover from their Birchbox, Ipsy or other monthly beauty services, eDivv.com rolled out the first online community providing users of all beauty subscription boxes a free marketplace to negotiate and trade their samples.   According to the company, eDivv.com facilitates the swapping of these items th...