Hi, I have had this site ranking for some high competitive keywords with some mix of GSA links + blog posts from a reputable seller here.. It has been ranking with a few up's and down (usual stuff) for past 2 months. 2 days ago I noticed some major drop in rankings (from #2 to #165 and same on all keywords), first I thought it was a penalty but I didn't saw anything in the GWT so I kept researching more and then I checked the index status and it turns out that the homepage (which was actually ranked on #2 for quite a few competetive keywords) was deindexed! I submitted the homepage to the instantlinkindexer now but I doubt this will help. Site has many unique articles and I try to add 1 new article once a week.. have you guys experience such thing in the past? What would you recommend doing?