Store icon and charset in bookmark's attributes.
ICON="data:image/x-icon;base64,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"
LAST_CHARSET="windows-1251"

Cleanup HTML before parsing using BeautifulSoap or Tidy.
Parse downloaded file and get javascript redirects.

More and better documentation.

Merge "writers" to storage managers.
New storage managers: shelve, SQL, ZODB, MetaKit.
More robots (URL checkers): threading, asyncore-based.

Configuration file to configure defaults - global defaults for the system
and local defaults for subsystems.

Ruleset-based mechanisms to filter out what types of URLs to check: checking
based on URL schema, host, port, path, filename, extension, etc.

Detailed reports on robot run - what's old, what's new, what has been moved,
errors, etc.
WWW-interface to the report.

Bigger database. Multiuser database. Robot should operates on a part of
the DB.
WWW-interface to the database. User should import/export/edit bookmarks,
schedule robot run, etc.