Gus,

I am all on the blackberry but I have some rules that keep me safe from the crackberry injuries:

1.) Keep Three classes of email accounts a.) legit email b.) shopping / receipts / billpay c.) spam
2.) If not turned off, Social Media Email notifications goto spam account
3.) TURN OFF all audible notifications on email but leave notifications on for SMS, MMS, Mobile IM's. I use GChat and Sametime for Work IM.
4.) Twitter: (Ubertwitter) Client is on manual update (notify on @'s /DM's if you like)
5.) Work / Personal Email is in separate buckets (Gmail for personal, BES for Corporate) - Keep the mail separate. I use GMails Blackberry client and it sandboxes my work and social life. It's less cluttered and lets you take days off when you want to be away.
6.) The Facebook client is using the mobile manual updates as well. Really only use this for manual push of pics / status (not real time communication)

This keeps the stream down to a manageable rate and keeps my attention off the blackberry enough not to be rude to those around me. The less time you spend looking at your smart phone the less likely you are going to walk into something.

Great tips, Chris. Thanks for taking some time to share them! -gs