If I download OSX Lion from the app-store, is that version linked to my account? I have downloaded Lion and created a bootable USB flash drive, a colleague wishes to use this. If I give this to my colleague will it be linked to my account or is it account independent?

Update: My colleague has a legal licensee to Lion but does not have a Lion install DVD. This is due to replacing a failed HDD in a Mac Pro. Instead of my colleague needing to download a 4GB file which they can't afford to I have a USB drive which I can lend to them.

As I remember Lion asks your apple ID when you first start up, is this the step that assigns your instance against your account or is my ID somehow embedded in the Lion copy I have.
I don't believe that your Apple ID is embedded in the installer, it may be but if it is, it doesn't matter. I downloaded Lion onto my iMac and installed it, and copied the installer to my Mac Mini (offline only computer) and installed it as well no problem. This was right when Lion came out too, and I has worked perfectly on both computers since.