Why new sites get rank higher in first few days? I called it Injection Effect (Injection of website into serp).
i just can add that one of my blogs had to wait like a moth or so to get indexed, and it ranked 6th for the keyword in the 1st 2 weeks and now it went to the 4th place...
I have had this with a game site of mine - ranked well for 3 days and disappeared... I think it is still in a bouncing state as virtually was nowhere to be seen for a few days and then it came back up again. I wish Google would give it the position they feel it deserves, so that I know what is needed to be done to improve it - whether it is additional content in certain areas or additional links for certain areas etc etc The injection affect - is it going to stay there after a few weeks or will it disappear and bounce around for ages?
In my experience it will depend on the term. I have had first page rankings that will jump around like crazy. 8th to 14th, then to 21st, then back to 8th. This is after many months, not just when the term first started doing well. Also, I have had terms that started out jumping around, but then found a spot, and have not moved around at all.
actually google dont like new sites on top, if u have perfect website and good onpage seo.sometimes it tops in google also like msn, but google drop will drop it slowly.MSN is good for new sites i think.
I would guess that when a site is first indexed it is reviewed by its title, description, maybe a bit of text, and little else. This can do well and often does, almost all my sites have dne well during the first few days/weeks. But on the next visit, or during the first couple of weeks, they start including the other factors such as domain age, link age, link quality and so on. It is at this point that the 'injection effect' sems to fail and the sandbox gets turned on. That's how it looks from here anyway.
It used to be called freshboost, and most agree it also would happen when changes were made in the links, content, etc. of an older site. It was generally attributed to visits by freshbot. I agree with Rasputin, it is likely that Google needs a bit of time to analyze the content, domain, links, and such to rank the site properly. However, I do not think that the sandbox effect is an actual construct, but an effect of the algo and filters - and the filter for new domains is strong enough to get the site buried by the cat, so to speak, if all other factors are equal to that of an older site.
I agree, it was my wording that was poor - I was meaning that 'what we call the sandbox' starts after a few weeks as a consequence of the domain aging, links etc being taken into account rather than that someone says 'site is a week old, lets flick the sandbox switch'.