Here’s a little technique we haven’t seen before, helper bubbles that popup to highlight new and/or underutilized features.

For example, in My eBay, this yellow bubble appeared on the screen pointing to a relatively new feature on the site, a drop-down box that allows the user to take various actions on items they are tracking.

Note: eBay allows you to turn off the bubble with a "Don’t show me this again" link.

Analysis
A great way to highlight important features of online banking.

—JB