The gurus at Google Labs have developed a new feature they say will eliminate those times where you inadvertently fire off an email message to the wrong Bob (or Jim or Tracy or Wendell or...you get the idea).

The feature will also let you know which of your friends are the most popular (to you), because that's basically how it works. Start typing in an email addy or contact name and the "Got the wrong Bob?" add-on will alert you if it thinks you've accidentally included someone you don't usually email as part of the group.

"If you normally email Bob Smith together with Tim and Angela, but this time you added Bob Jones instead, we'll warn you that it might be a mistake," Google explain in a blog post. "Note that this only works if you're emailing more than two people at once."

Perhaps going overboard with the whole "Bob" thing, Google Labs also said it has changed the name of "Suggest more recipients" to "Don't forget Bob."

You'll find both of these under the Labs tab under Gmail settings.