Bicycle Mechanics - Should i have barrel adjusters on my SRAM Rival shifters and brakes?

I have a SRAM Rival setup on a bike (Ridley cross bike) i got that was kit'ed and built by a LBS. I noticed that none of my derailieurs or brakes have any barrel adjusters for adjustment. I got the RD dialed in without one, but the FD has loosened up again and i wish i could adjust it. Having them on the brakes would also be nice...

Whats the best type to use and where should i install them? The front brake has a hanger thing off the headset, is that ideal? The rear brake's brake housing holder part is build into the frame. The RD is bottom pull and has a plastic pulley below because the cable is routed on top of the TT. Where is the best place for an adjuster there?

Is there a reason i wouldn't have these?

Thanks!

I usually see barrel adjusters on the down tube cable stops. Not sure about the brakes unless you go inline.

A clever setup on cantilevers puts the barrel adjuster on the end of the cross over cable, fixed end.
http://cyclocrossworld.stores.yahoo.net/diacomrearca.html if you got brakes like these [parallel plates]
http://cyclocrossworld.stores.yahoo.net/trpeucycabrn.html
http://cyclocrossworld.stores.yahoo.net/ri4zacicybr.html

all my cables are run on top of the top tube so thats where my stops are. Can adjusters go there seems like itd be sort of awkward to rotate them there agains the TT.

i have Avid shorty brake calipers... not sure how they match up.

Thanks!

So i need to tighten my FD cable. I guess i'll mark the cable with a sharpie, shift to the small ring, pull it like 1mm tighter and clamp? repeat as needed?

So i need to tighten my FD cable. I guess i'll mark the cable with a sharpie, shift to the small ring, pull it like 1mm tighter and clamp? repeat as needed?

4th hand tool