[Update: Blippy cofounder Philip Kaplan emailed a response. CNET News is reporting that the cards in question were issued by Fifth Third, not Citibank.] [Update #2: As of Saturday morning in California, Google told Blippy they’ve removed all credit card numbers from Blippy in their index. We found one more number just before the purge completed.] Yesterday was a big day for social-oversharing site