Hello -
What you'll hear is pretty much the following: Sign up with every MSC out there. Make it a point to sign up with 5-10 new companies daily until you've exhausted all of the ones below on the list, all of the companies at Volition, and other places.
Many people are signed up with 150+, and some with over 200 companies.
Shops that are in my area (Arizona) may not be in your area and vice versa. There is no easy way to say who has clients where. I personally find that many of the MSC's that a lot of people refer to on these forums are not shopped here in AZ.
Besides, you sign up with one company now, they may not have jobs in your area, maybe they won't the rest of the year - but in 2013, they get a new Client and all of sudden they have a zillion jobs. Clients change MSC's all the time. MSC's get new clients too.
I'm currently signed up with... 149 last count. I work mainly for 10-15 of these per month on a regular basis. I just did 1 shop for a company I signed up with back in October. First time I saw them have a shop in this area, but it paid $25.00!
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Proud To Be A Soldier's Mom