it provide me any benefit? I have a Southwest Rapid Reward Visa credit card and I believe that for every $1,200 I spend on it I get one flight credit. 16 credits earn a rapid reward voucher.

If I use it to pay for a Southwest flight, do I get bonus credits or any other incentive? or is it just like any other purchase I make?

Does it matter if I book the flight online or over the phone?

Are there better mileage/incentive credit cards that I should use? This one was free for the first year but now charges me an annual fee of $59 I believe.

I probably charge enough to earn a flight every two years (8 credits per year) plus I fly Southwest two to three times per year so I end up earning almost one Rapid Reward voucher per year. On eBay and Craigslist these vouchers sell for about $300 each.