I'd note, by the way, that just because you take steps to get more targeted offers, you may not necessarily get more good targeted offers. I've opened up my Amex account settings to receive more offers by email. Today, I got an exciting offer for a Starwood Amex with 10000 Starpoints after first purchase--with no offer of any additional points, such as the longstanding Starwood Amex offer of 10K on first purchase and an additional 15K after spending $15,000 within six months. I've received several additional offers, none of which has tempted me and none of which hasn't been recently topped by a generally available offer without a specific ID code discussed on FT.
Since I think the Starwood Amex is possibly ripe for a more decent offer soon, perhaps 30-40K points for a spending amount reduced from the current $15,000, I think I'll pass on this targeted offer and wait to see what pops up on FT.