Starwood Preferred Guest - Best way to transfer to Starwood points

I am looking to add to my starwood points. Which transfer partner gives the best ratio? I have AA Advantage, Amex member rewards, Hilton, Marriott rewards, and Alaskan Air. Amex rewards only gives 1 Amex for .33 Starwood. Is points.com a viable tool?

TIA,
Brenda N

Outside Clickrewards which is in bankruptcy the only ways to add Starwood points is

1. Through AT&T(2000 pts for online billing, 1 pt per dollar after)

2. Amex Starwood Card

3. Staying at the hotel and booking online for 500 pt bonuses.

4. Going out to eat at a starwood hotel every nite of the week.

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<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by mypriceline.com:
Outside Clickrewards which is in bankruptcy the only ways to add Starwood points is

1. Through AT&T(2000 pts for online billing, 1 pt per dollar after)

2. Amex Starwood Card

3. Staying at the hotel and booking online for 500 pt bonuses.

4. Going out to eat at a starwood hotel every nite of the week.

</font>


There is Diners Club and Amex Membership rewards too, but the exchange ratios on those are pretty bad.