OK, Here's the deal.
I have always just kept 3 frequent fliers programs. One for each of the alliances (sky team, star alliance, one world). For sky-team i always used Northwest World perks. Since they merged with Delta, the miles merged as well.
My question is:
We all know that United and Continental are planning to finish their merger by the end of the year. So now, I have always accumulated United miles. I have their credit card as well. Is it worth it to open a Continental credit card also, get Continental's 30000 miles and hopefully by the end of the year they will merge with United?