Have you still not finished shopping for Father’s Day? It’s OK, you can admit it. You can always send a last-minute Amazon.com gift certificate- even a seasoned online shopper like me does this quite often. Actually, it’s a very welcome gift. It’s redeemable for millions of Amazon.com items and is available in any amount from $5 to $5,000. And it never expires. Best of all? You can send one right now, along with a nifty e-card notifying the lucky guy that he can buy whatever he likes. No more wallets and ties. Purchase a gift card at Amazon.com.