So what's left standing
 

Now that a number of SIM Cards have gone belly up...helps to know what the offers are.

-The prepaid GSM page is already updated (PrePaidGSM.net: International GSM Operators)

-I found a few that are likely rebrands not mentioned there:

+372 Estonia

>>OneSimCard
OneSIMcard - International SIM Card, Prepaid SIM cards, International Mobile phones, rent a cell phone for international travel, International Cell Phones, Global Phone SIM Card, corporate mobile phones
10 month Expiry

>>GoSim
International SIM Cards from GOSIM™ - cheap mobile calls from abroad
Credit Does not Expire


+447 Isle of Man

>>0044
Global SIM Card, now just £19.99


Anything else out there?

dual IMSI SIM cards
 

It appears we are at the dawning of the age of "dual IMSI SIM" cards. I think if you are not going to need a SIM in the next few weeks, it might behoove one to see what is available and coming out in the next few months. Another thread indicates a brand that is already available. Others say they will be out in a few weeks or [2]months.

I await the test reports of those who have a more pressing need than I for instant gratification in this area.