Vec_One - 4:52 am on Sep 30, 2004 (gmt 0)

I have read about several problems lately.
1. New site sandboxed (indexed but not ranking well).
2. Mature site sandboxed (indexed but not ranking well).
3. Site removed from index.
4. Pages not ranking well for unknown or unspecified reasons.

I have some experience with Problem #2 and I'm fairly sure it's not a regular algo change. It affects a particular site completely, but doesn't touch other similar sites. It's not like they turned down the knob on titles or something. It's more like complete individual sites are singled out and sandboxed by either the algo or humans.

It would be a lot easer to determine what the cause of the problem is by observing what it isn't. Let's try to zero in on the probable reason(s) by eliminating possibilities.

Of the people who have had complete mature sites sandboxed:
Has anyone NOT added a lot of new pages over the last few months?
Does anyone NOT have a lot of similar content on a lot of pages?
Does anyone NOT have heavy internal linking?
Does anyone NOT have a lot of inbound and/or internal links with identical anchor text?
Does anyone NOT have some sort of affiliate links?
Does anyone NOT have more than 1,000 pages?