mi scuso per l'inglese in una lista italinissima, ma almeno
mi risparmio di scrivere due volte l'annuncio 
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I've just released a new version [2.0] for the
SQLite's Spatial extension [spatialite]
http://www.gaia-gis.it/spatialite-2.0/index.html
It's decidedly a MAJOR VERSION, as I introduced
lots of new features:
--------
- completely re-engineered code base
- now supporting standard GNU Automake build system
[./configure; make; make install]
- now integrating GEOS, in order to support the
complete OpenGis Spatial SQL functions set
[this including any sophisticated spatial
analysis function, such as Overlay(), Contains(),
Touches(), Buffer(), ConvexHull() and so on]
- now implementing standard Spatial METADATA tables
[geometry_columns / spatial_ref_sys] and enforcing
column constraints on geometry classes and SRIDs
- now implementing a genuine and effective Spatial
Index based on the [still experimental] SQLite's RTree
- and all this for less than 2MB of code
[and, if you don't care to implement GEOS and related
spatial analysis functions, you can build a light-weight
version for about 500KB, this still including basic
WKT / WKT handling and Spatial Index]
Let say now we have a "smaller PostGis" in a nut-shell,
requiring no administration or configuration at all,
but effectively supporting full SQL Spatial data processing
Enjoy
Sandro Furieri