it is difficult to find a good Link Building Service
can’t say i’ve used too many of them but i’ve tried backlink banzai for 3 months … $200 in a garbage. i would say it’s a scam: i’ve had 20 urls setup with different keyword settings (from 1 to 5 per url). i’ve also tried different “saturation” methods (anti panda method). NOTHING
one of my keywords moved from 100 to 40s, but honestly out of 20 url i’ve had there … just a fluke, that had nothing to do with backlink
good link building
on the other hand is wonderful. had lots of success with low to medium and even some high competition keywords.