I got a website Ive been working on since Sept, and I got a few articles that I posted back then that still arnt ranking. I added 15 articles 3 months ago and right now 12 of them are on the first page of google. The other 3 are not even in the top 1000 yet.

Why arn't these article ranking? They are all unique articles, same onsite SEO as all the other articles, and have backlinked them the same as all the others.

Another stange thing is over the last 2 weeks I added 5 more articles which all ranked anywhere from #100-150 within hours of posting them, and no backlinks at all. Any idea whys these KWs wont rank? I really need them too since they get good search volume, around 6-8000 a month.

No one has any ideas or thoughts?

I hate to keep asking, but I would really like to know if anyone has any insight about this?