My dealer has a new revenue enhancement procedure.  They check alignment on all cars right in the intake bay. Lasers sure are great.  He reports that my camber on both fronts is out and wants $100 to adjust.  This would have been a good deal if it included the front camber bolt retrofit kits, since the Vibe has no front camber adjustment from the factory.  I'm sure it didn't include the kits, so I declined and am taking it to my regular alignment guy tomorrow for a recheck.  You can buy three different brands of adjustable camber bolts(Raybestos, Delco, Moog) from Rock Auto for $20-30 per pair, or  Specialty Products bolts at OReillys for $31 per pair.
I suspect the out of whack camber may be ball joints going out(they're getting loud), if in fact, it's real. So I will get them checked tomorrow before even buying the bolts, but the bolts couldn't be easier to install. On the other hand, my daughter just banged the car up on a wall sideways (replace front bumper). Since the camber is out in the same direction on both sides, she may have tweaked the strut mount bolts. I see no unusual edge wear on the tires, but they're relatively new stiff Pirelli's with hard compound.
There's a thread here that says loosen the strut bolts and pull on the wheel for minor adjustment.
Theoretically, I could elongate one of the strut bolt holes and get more adjustment and skip the retrofit bolts. The camber retrofit bolts just have a cam shaped lobe for this same adjustment. They're quite commonly necessary after a suspension lowering mod eg. Coilovers.