Email newsletter subscriptions can pile up, and the start of a New Year is as good a time as any to finally unsubscribe from email you don’t want to receive. Here’s a Gmail tip for finding most subscriptions in your mailbox, so you can either go through one by one, or set filters to organize them by labels. Simply search for the word “unsubscribe.” This isn’t foolproof, but it will catch most of subscriptions in your inbox.

Amit Agarwal is a professional blogger, and despite what he knows about choosing secure
passwords, his Gmail account was hacked. Going through the recovery process to regain control of his Google accounts, he learned some interesting things. In this article he offers advice on what you should do now to make it easier to recover if you find yourself in a similar pickle. For example, write down the date you opened your Gmail account, and the names of any custom labels you created. To read all his tips, continue here.

Although it is still only available with an invite from an existing user, Google Voice recently opened up their free voice mail service for use with your existing phone number. With Google voice mail, you get voice mail messages with attached audio files delivered to your email inbox along with a transcription of most messages, so you can read what your voice mail says. Watch a video of these features at Google Voice .

On October 1, 100,000 lucky users got an invitation to preview Google’s new real-time communication platform: Google Wave. It combines email, instant messaging, chat, project management and social networking in a client that sits within the browser. To learn more, read Mashable’s guide or watch Google’s video .

Email experts advise against using your email inbox as storage and instead suggest frequently cleaning it out and storing old messages in archive folders instead. For Gmail users, here’s a filter that will move all messages older than a certain date to your archive. Click “Create a Filter” and in “Has the words” enter “before:2009/07/01″. Now choose “Next.” Check “Skip the Inbox” and the box that says “Also apply this to the conversations below.” Now click “Create Filter.” Of course, you can change the filter to use any date of your choice, in the format “before:YYYY/MM/DD”.

Although Google creates wonderful, free products that so many of us love and use, from a purely information management viewpoint, we should all be a bit more concerned with data portability. And Google agrees! The Data Liberation Front is an engineering team at Google whose one goal is to make it easier for users to move their data in and out of various Google products. Learn more at The Data Liberation Front.

The bundles feature of Google Reader is a really simple way to create OPML files for sharing with even your most- technology challenged friends. An OPML (Outline Processor Markup Language) is an xml file that contains links to other RSS feeds, but Google makes it all transparent. To create your own shareable bundle, click on “Browse for stuff” where you’ll see bundles recommended by Google staff, and the ability to roll your own. Learn more about Google’s feed bundles at TechCrunch.

In early July, a hacker comprised the email account of a Twitter employee, and stole some internal company documents. He did this by using the password reminder feature of Gmail. What can we learn from this? First, use unique, unusual passwords. Second, make sure the answers to your security questions are not easily guessed. Third, make sure your alternative email address (for password resets and reminders) is still one that you receive mail at. Fourth, do not store passwords in your online email accounts. To learn more, read Ask Dave Taylor.

Because Google Docs is free, cross-platform, and easy to use, it is an increasingly popular tool for online collaboration. Whether you are an existing Google Docs user, or just thinking about trying it, Daniel Shane has six tips for getting the most out of Google Docs. Tip one introduces the built-in chat client to make collaborating even easier. Read the full article at Six Revisions.

Knowing a few Google shortcuts can make everyday searches easier and faster. Here are two of my favorites. “weather:90212″ returns a four-day weather forecast for Beverly Hills. Just substitute your own zip code for more relevant results. “phonebook: lois lane” returns about forty-two results. Maybe one of them is the Lois are you looking for. For more Google shortcuts, here’s a printable cheat sheet from About.com.