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Thanks for the quick responses so far. This is mostly just confirming my suspicions. I will definitely file à spam report, even If it is not filed as spam by Google this has a chance of resolving the situation in an easy way. Takeshi, I am not sure where they got them all but i found several that are just worthless and only contributing to the link count (not qualities). However, what If the website HAS all quality links; What would you guys do to get these massive links? Thanks again

Since 2 / 3 years I have been doing work a client of mine. I have been building a good reputation and also a lot of top 10 / top 5 positions for mayor keywords. Starting about 4 to 12 weeks ago the positions have been dropped some due to (very) new competitors. My questionnaire is this: The client had everything better, also when I use the SEOmoz analyses. The only difference now is; the new competitors have made massive links in very short time, that making 2 things: more links than my client and also beating my clients positions. These domains exist since 3 to 9 months. What I am trying to figger out is; 1. How do they make 250.000 links in this time? (safe and so quick) 2. How does only this effect the SERPs so much? 3. If they continue this, Will they keep climbing up or get à penalty? Love to hear some advice. Thanks,