Just wondering...
There are some strange addersses in blockchain.
Look at these msig addresses:
3A2tqbPLPG248Bisqwo5YTc7qegz2NubSh
2-of-3 msig of {
1F3sAm6ZtwLAUnj7d38pGFxtP3RVEvtsbV, 1C6RiMmuiWEGfEatuLNmRYNG1kaQzUt1u9, 1283gYYX9R3CLEDHU31Wxy5bzpFknpDTUY }
36gYmoA5DrDEnvENNmyef4CyH9TDdsoXng
2-of-3 msig of {
1F3sAm6ZtwLAUnj7d38pGFxtP3RVEvtsbV, 1Nn5i5nXMUgDXktyiHhfRApHtvXfnBinGg, 1H7sZtTSgUq6Tv5ykr6mJDktAhoK5HMfFL }
34GU3ThG3sq2bAJHG6UWwhwKrPuWL2UDb3
2-of-3 msig of {
1F3sAm6ZtwLAUnj7d38pGFxtP3RVEvtsbV, 181m1p28X1TVC5eRd3HTUY45o9y2NLedvu, 1PVUmPa127qn55J6vH32wwWUcjVSSQWRYP }
There are several other examples in blockchain, these are the recent ones.
What is strange? 1F3sAm6ZtwLAUnj7d38pGFxtP3RVEvtsbV is compressed address of brainwallet ( "" )
So, in fact these addresses are not 2-of-3, but 1-of-2 (because one private key is well known)
There is no visible reason to use 2-of-3 keys in this case... 1-of-2 would be better. May be it is a bug on some (unknown by me) service?
upd: OK, may be it is some sort of counter, to make all 1-of-2 msig addresses used once
related topic
https://bitcointalk.org/index.php?topic=666016