syndication

As maybe you heard, my application was accepted to write a new aggregator for Drupal core :) : http://code.google.com/soc/2008/drupal/appinfo.html?csaid=1222E090E875B3...
Here as a first step, I would like to collect lots of possible problems in aggregation area. Please share your opinion about these questions to help Drupal 7 to have as good aggregator as possible :) :

The items are not necessarily ordered by relevance.

Node creation

I am currently looking for an experienced Drupal developer to work on or consult on 2 projects:

1. Maintenance work & upgrades on an existing Drupal 5.1 retail site (http://everywheremaps.com);
2. Transferring an existing (news publishing) site onto a Drupal setup. The new site will have the following components: user management (protect private content areas), content sydication (for both public users and subscribed users); searchable archive for public content; and ad serving.

Please forward your work experience, availability & hourly rate to info [at] thecreationprocess [dot] com.

Added to official ideas list at http://drupal.org/node/237628

Overview: With Encrypted RSS/Atom feeds, buddylist-like features become possible cross-site. The project would be to develop a module which generates and consumes syndicated feeds, where reading them in only possible behind a login.