The newest version of our favourite open source web browser, Mozilla Firefox 3, offers dozens of new features and fixes, but only a handful will make the most dramatic difference in your everyday browsing. After 17 months of alphas and betas, Mozilla's finally made a feature-complete release candidate available, so it's time to spotlight the biggest improvements that will make "Gran Paradiso" the browser to beat. Nearly everything in the open-source app has gotten a second look from the minds at Mozilla, from back buttons to bookmarks, address bars to add-ons, passwords to performance, and the changes will make Firefox 3 worth the upgrade come its official release date, slated for sometime next month. Let's take a look at the 10 best upgrades in Firefox 3, and how they'll bolster your browsing, after the jump.

Blogger Albert Alberts loves a slim wallet, and after reading over some of our wallet-slimming tips, he realised he had a powerful wallet-slimming tool in his pocket all the time: his iPhone. His idea? Rather than reducing his membership cards to just one club card, he scanned his membership cards to his computer, then synced them to his iPhone as an album called WalletCards. According to the post, his phone-friendly cards even scan successfully. You're still going to be at the mercy of whether or not the workers are willing to accept your scanned cards, but if they are, you can carry around all the membership cards you want without adding any bulk to your wallet.

You don't have to mod your classic Xbox to run the best free media centre application around anymore: Dedicated developers have ported the Xbox Media Centre (XBMC) software to the Mac, and its killer features will convince you to abandon Front Row forever. The latest XBMC on OS X beta dropped last week, and it's as stable and useful as ever. Dubbed the "throw out your Xbox" release, XBMC for Mac 0.5 beta 1 adds the key feature that finally puts your media centre Mac under the TV where it belongs: remote control support. Let's take a look at how you can (and why you want to) replace Front Row with XBMC on your Mac.

YouTube search webapp TimeTube creates a timeline of video clips for a certain search. Search for something (like "American Idol") and you'll get back a timeline (or "tubeline") of video clips. Pan, zoom and watch the clips right on page. Fun way to catch up on old clips of interest you haven't seen in years.

iPhone/iPod touch only: You may be familiar with Orb for its music or TV-streaming abilities (it can even turn your Wii into a media center), but now the folks at Orb have taken on the iPhone and iPod touch with a new application called OrbLive. You can now stream live television to your device, in addition to music, videos, photos, and everything else Orb is known for. Hit the jump for a look at Orb's live streaming in action and a guide for installing OrbLive on your iPhone or iPod touch.

Firefox only (Windows/Mac/Linux): Firefox extension YouTube Comment Snob filters comments on YouTube videos that don't meet your snobbish standards. It does so using a combination of criteria, like a user-defined threshold of spelling errors (using Firefox's spell-checker), excessive punctuation, and excessive capitalisation. You can enable or disable any of the filter options if you don't mind capital letters, for example, and you can view any hidden comment by simply clicking Show. It's a pretty saucy little extension, but now it's hard not to want a full-on Internet Comment Snob.

Apple may open up its iPhone and iPod touch devices to third-party apps next month, but the chances that Linux users will get invited to the party are slim at best. That hasn't stopped some intrepid hackers from coming up with a better music-syncing solution than the one Mac and Windows users have—a two-way wireless transfer, from almost any music organising app you like, no wait for iTunes or USB cable required. Linux users, let's take a look at how to set up your iPhone or iPod touch for any-time wireless access after the jump.

No matter how meticulous your programming, or how smart you might think your TiVo is, random scheduling changes can cause you to miss an episode of your favourite series and not realise it until your co-workers give away the plot. mytvrss, a free no-subscribe RSS generator, provides an aggregate feed of air date announcements for the shows you choose, which can be edited later. It's not for those suffering from an acute case of feed overload, but it could make for a pretty helpful iGoogle gadget or other embeddable feed.