Free Our Data debate goes public, hydrogen-powered London buses, US and ICANN, ISPs and file sharing, the 1% rule and much more...

This week's print edition of the Technology supplement is online too..

• Public data drives public debate
  A gathering at the RSA produced as many opinions as voices when an expert panel met 130 people eager to debate access to public information, reports Michael Cross.
• The lighter route to cleaner air
  London is spearheading the drive to cut pollution by investing heavily in hydrogen-powered buses. But is there a better way?
• Time to loosen your grip on the net, US is told
  One thing governments hate is being skewered by their own public consultation. So there will be red faces in Washington this week as officials from the National Telecommunications and Information Administration (NTIA) go through the 632 emails they have received in the past month.
• ISPs face the music over file sharing
  Should companies such as Tiscali act as judge and jury with alleged file sharers of copyright music, and cut off their connections? The record industry seems to think so, say Bobbie Johnson and Charles Arthur.
• Newly Asked Questions
  • What is the 1% rule?
    It's an emerging rule of thumb that suggests that if you get a group of 100 people online then one will create content, 10 will "interact" with it (commenting or offering improvements) and the other 89 will just view it.
  • Is Microsoft going to release an iPod killer?
    Not exactly - but the signs are unmistakable that it will launch a handheld "media" player a bit like Sony's PlayStation Portable (PSP) this autumn. It is codenamed "Zune".
• Gadgets
  • Vodafone broadband card
    Vodafone this week took mobile communications to another level with the introduction of the UK's first HSDPA (High Speed Data Packet Access) card for laptops.
  • Sony DVD Walkman
    With all the talk of the next generation video iPods and Microsoft's forthcoming Zune player, it is surprising that Sony should still be championing portable DVD systems. However, there is much about the D-VE7000S that is attractive.
  • Roadstar digital TV tuner
    The switch-off of analogue TV transmitters over the next few years doesn't only mean viewers will have to upgrade to digital sets. It will also make redundant millions of portable TV sets.
• Gamesblog: Developer's episodic tantrum hits wrong target
  Keith Stuart: Something surprising happened at last week's Develop conference, an annual get-together for developers and hangers-on. Someone got angry. Mark Rein, vice-president of Epic Games, creator of the hit shoot-'em-up series Unreal, launched two stinging attacks.
• The future of games is freedom
  John Romero, The founder of Ion Storm and co-founder of games developer id Software, is working on a massively multiplayer online (MMO) game, with the aim of reinventing the genre.
• Rural users lack aerial view
  With wireless broadband set to become more widespread, the focus in country areas is likely to be on quality, not availability.
• Grand digital designs for connected communities
  Michael Cross: Britain doesn't do digital grand projects. Like general elections on Sundays, we leave that to continentals. Last week, however, the government announced a shortlist of bidders for what looks like an unashamedly gung-ho attempt to create an exemplar digital community.
• Slices of life in a parallel universe
  Victor Keegan: On Sunday evening I was invited by a Guardian reader to a lecture, Life on Mars, hosted by the International Spaceflight Museum.
• Technobile
  Linda Jones: Blaming lateness on your satnav is right up there with 'the dog ate my homework' in lame excuses.
• Ask Jack
  Send your questions and comments to jack.schofield@theguardian.com. Published letters will be edited for brevity, but include full details with your query. Please visit our Ask Jack weblog for daily updates.
• Newsbytes
  Intel's early arrival | Microsoft's CRM software online | Say cheese | Seeing in the dark | Windows in your Palm | Plan of attack | Remember, remember | Yahoo 2.0
• Letters and blogs
  Send your letters, comments, questions and rants to tech@theguardian.com, and please include your address and post town.