Originally Posted by AdultKing

This is the same with all user run software which accesses Google's data. Google has tightened up how much data you can pull directly from it. Market Samura, SEO Power Suite, etc were all affected.

As DamageX stated above, competition data for Market Samurai now comes from Bing. I don't see that as as big a problem as people have made out it is, after all the SEOC metric is only meant to give you a representative guide, it was never definitive even from Google.

Products like Raven Tools and SEOMoz are excellent, however they come at a cost, both starting at around $100 a month.

I use Raven Tools and Market Samurai.