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I ordered a sim adapter off ebay and what a load of absolute rubbish. Brother used it in his iPhone and nearly got stuck. Then when I got my Micro Sim from O2 they woman gave me a micro sim adapter to go with it and that one works a treat
 
I got one sent out from O2UK simply for registering an interest in the iPhone 4!

No charge too!
 
I never got my adapter from a UK seller either. I ordered one off ebay and it arrived a couple days later and works great in my 3gs.
 
I ordered mine form the MicroSIM shop about a week before iPhone 4 lauch, and it was here 2 days before the phone. Had a chance to try it in the 3G last weekend for some emergency tethering need and it workd great.
 
Yea I'm with you OP I ordered from Microsim Shop and have been waiting a month now. They said some BS about British Airways strike or something.
 
I made my own out of sturdy but thin cardboard. Works great!

Although, I wouldn't recommend this for a long-term solution as cardboard (and the tape) could degrade.
 
Almost a month ago I ordered a microsim adapter from this place:

http://www.microsim-shop.com/

Still have not recieved it..

Has anyone gotten their hands on one from anywhere?

I ordered 5 of them from the same place (microsim-shop) about 2 weeks before iPhone 4 came out. Ordered on a Thursday and had them in hand on Monday (4 days ship time), and I'm in the US as well. I thought 4 days ship time was pretty remarkable.
 
I made my own out of sturdy but thin cardboard. Works great!

Although, I wouldn't recommend this for a long-term solution as cardboard (and the tape) could degrade.

Actually, it’s better to use your old 3G/3GS sim, and cutout the shape of the microsim with an xacto knife. IDKY anyone would bother buying one of these adapters, since that’s all they do to make one.
 
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