Everyone needs a travel buddy, and web reviewer Kate Russell has 1.6 million of them at travbuddy.com - a travel based social networking site where members can share experiences, tips and reviews - and even find other people to meet up with along the way.

Barcoo is a smartphone app for smart and ethical shoppers. Once downloaded just scan the barcode of something you are thinking of buying and the app will search the web for a wealth of information, including reviews, price-checks and sustainability footprints.

If hashtag conventions get you all in a twitter, followfridayhelper.com will help demystify one of them - #followfriday.

Don't miss out on the action at the South by Southwest music, film and interactive festival in Austin, Texas. Justin.tv will be streaming content throughout the festival week.

Creative photography gets the retro treatment with iphone app, instagram and there is a new geo-tag search for the app available at hipstervision.org

And finally, a quick note if you are trying out the new super-fast Chrome browser on beta - Google announced a few important changes this week so don't forget to update to the latest version.

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