Deleted -- thanks for trying out our features, that's great to hear. Here are some of the answers to your questions:
1. Over time we do plan to add more fields for contacts, including the ability to support multiple phone numbers and integrating with some existing fields from Outlook as well. We'd welcome feedback on particular fields that are very widely used in your company.
2. Currently you can filter a contact based on a name or number and we plan to extend this capability over job titles as well very shortly.
3. Over the next calendar year, we do plan to add the capability to look up your contacts as well for incoming phone calls.
4. The update is not real-time, currently both the desktop client and the web based app maintain an up to date of contacts from Outlook that's updated every 1 hour - this is to make sure the performance of the desktop is unaffected by constantly polling Exchange for a copy of contacts. However, if you were to return to the A-Z list of contacts after a while or restart the app, you should find the updated contact. We'll continue to improve this over time as well.