With a L1, you cant jump jobs. For ex - if you are working for AIG on a L1 sponsored for them, if you get laid off or want to move on to greener pastures, you simply cant. I am facing this issue, cant tell you how frustrating it is!!
On a sidenote, i read that the H1b/TARP fund clause has a 2 yr sunset clause.
fall09
Pradeep
I believe L1 is for intra-company transfers.So you can work in the company which sponsored your L1.But there might be restrictions on working at client locations.