Requirements:

1. Free SearchEngine Software
   1. htdig (small installations)

   2. ASPseek (medium size)

   3. Nutch (large scale)

2. Very many installed SearchEngines, (range of serveral 100) ...

3. ... maintained by reliable institutions
   (universities, libraries, companies et al)

4. PLUS serveral "meta-umbrellas", like MetaGer
   which cover 2) PLUS the global commercial players

5. self organizing coordination