There's a new experimental feature in Gmail labs that you probably didn't know you needed until it existed. OK, you still probably don't *need* it, but it's a great example of how a service like Gmail can take the information it automatically gathers about your behavior and use it to make the simple act of sending an email easier.

Here's how it works. If you enable the "Suggest more recipients" option in Gmail Labs (which you can find by clicking the green test tube icon in the Gmail menu), Gmail will attempt to suggest people in your contact lists you might want to add to group emails. For example, if you have five friends that you frequently forward pictures of cute puppies to, the next time you enter two of their names, a menu should pop up suggesting you also include the other three contacts on your email.

You'll need to enter at least two names before the suggestion feature kicks in. And it only works if you've regularly sent emails to groups of people. If you enter the names of two people who you've never sent group messages to before, no suggestions will appear.