There are many reasons for pages going supplemental, duplicate content, no links, etc.
The important thing to remember is only the "supplemental results" tag was removed.
The supplemental index is still there and most sites have pages within it.
There has been and always will be two indexes.
Speed of returned results dictates this need.
Documents are sorted into the two indexes for various reasons within Google's algorithm
The Anatomy of a Search Engine See Sec 4.1 and accompanying illustration to better understand.
At one time these indexes were known as
'forward' index
'inverted index'
The forward index holds just the documents most likely to be returned for the average persons search query. (See Google Trends - Google Zeitgeist)
The inverted / supplemental index holds all pages and will have results pulled from this index when docs within the forward index do not return the results needed for obscure search queries.
Lastly relying on an search engine to build your business is a recipe for disaster and a precursor to filing for bankruptcy.
You should set up a myspace - facebook - ivillage-bebo profile page. Join groups in fashion, design, beauty, modeling, anywhere large groups of women are to be found. Gain friends and then advertise special "community friends" discount.....sort of the employee discount of the Internet.
Soon you will never worry of a search engines method of operation.
Peace!