For a limited time, Amex has brought back a 75,000 bonus point offer on its Business Gold Rewards Card. The last time this promo was offered back in February, it was only available for a single day. This time around, you’ll have a bit more time. Under this offer, when you apply by June 26, 2012 and spend $10,000 within 4 months, you’ll earn 75,000 bonus Membership Rewards points.

As usual, the card earns 3x points on airfare, 2x points on advertising, gas and shipping and 1x points on everything else. Also, as part of this offer, the $175 annual fee will also be waived for the first year.

For more details, see this link.
Update 6/27/12: This offer has now expired.