Welcome to Platform Five, a weekly look at the newest social media tools making waves on the Web.

This week’s edition includes a video aggregator service, an alias-mobile number creator, and a serious QR Code service provider.

Here we go:

1. Create video channel feeds based on your favorite websites with Frequency.com. What a great idea. Frequency pulls video content from your favorite websites and sources (and recommendations from your friends) to give you the best in video content as suited to you. Keep your eye on this one!

2. A private social network for your local neighborhood? Visit Nextdoor.com. The recommendation economy gets local with the release of Nextdoor.com, a private social network that facilitates relationships with people who live and work near you. Need a babysitter? Then this might help you find one.

3. Create an alias-mobile number with MyAKA.com. Ever wanted a second mobile number to give to people before you got to know them? MyAKA gives you an alias number that is linked to your real number to give you an added layer of security.

4. Bring your social network friendships together with Symbyoz.com. This aggregates your Facebook, Twitter and LinkedIn accounts to give you an overall picture of the status of your relationships with each individual. It will also help you set reminders to make plans with certain friends.

5. Create QR Codes packed with powerful analytics thanks to ScanLife. If you are after a way to create QR Codes in an easy manner, this might be the solution for you. It can also help you create Datamatrix and EZCodes.

Got a Web app or social media tool you think should be profiled on Platform Five? Send me an email.

On the Paratus Communications blog, PR Daily Europe contributing editor Adam Vincenzini rounds up five of the most-talked-about social media platforms each week. The feature is called Platform Five. Adam has agreed to simulcast it on PR Daily. If you’d like to check out the previous editions, they’re all here for you to browse through.