Made around 400 blogs within one week - all with unique content and spread around 30 platforms, the site went up from 70 something to 40 something and then well... i made around 100 blogs within 2 days, pinged (in portions as they were created) and today morning I saw it went down by 300 positions. Now I don't know if it's google penalty or just dancing before moving up? or 300 is to much for the second option? I don't quite get it - it's just that one page on service that has gone down so much (and in fact with keyword i was linking - on the other similar keyword it's on the better position than it was (top10)). Should i completely stop building links to it with that specific anchor, try linking from new sources or... ? I'll just add that the domain is around 10 years old with 0,5mln pages indexed.