As a Computer Engineering student, Octopart is defiantly one of nicest sites for buying parts or just looking for data sheets. I actually wasn't aware it was a YC company, but it makes sense!
This biz idea reminds me of Hipmunk. Even though I know Hipmunk is more or less just an affiliate referral service for Orbitz, the UX is enough "value add" to win my business.
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