I'd like to get people's thoughts on the following:
I received a card in the mail yesterday from Continental granting me silver elite status from Aug 1st to Nov. 15th. In that time, if I fly 3 R-T flights, I will get Silver through Feb 2004. If I fly 6 R-Ts, I get Gold through Feb. 2004.

I'm currently Gold on DL, and do most of my flying on DL. I usually back that up with UA. The last CO flight I took was in December of 1999.
To that end, what do people think? Is this worth it? Are there good "R-T" runs that I could do do make the cuts for Gold? How successful are Silver in getting upgrades? How does CO compare to DL vis-a-vis treatment of its elites?