We list the world’s 10 most annoying viral marketing campaigns; the one’s that had you wondering ‘WHAT THE!?' from the moment they popped up in your inbox or clicked on them in YouTube.

Team performs 11-month calculation to crack high prime number.

HP’s latest PC blends power, useful business features and a keen eye for detail

Good things in small packages.

The Qosmio is the absolute pinnacle in multimedia notebooks. It brings everything you need for a good Windows XP Media Center Edition (MCE) system and squeezes it into a notebook form-factor. Albeit a large notebook form-factor. Yes the Qosmio is a huge and heavy notebook, but it's not nearly as heavy as it would have been if it was packed with desktop internals as many desknotes of this size usually are.

Offering 40GB of storage, the Iomega drive is very small for its capacity, measuring a mere 8.89 x 7.37 x 1.27cm. It weighs just over 99 grams, which means it's unnoticeable in your pocket. The internal drive is a 40GB Hitachi TravelStar C4K40 -- a new form-factor hard drive, measuring a mere 1.8 inches across (a normal notebook hard drive is 2.5in, a desktop drive 3.5) -- and only about 7mm thick.

The 19" LCD fits now represents outstanding value for money, and is so much nicer to use than a 17" screen. We round up and test the best.

IBM has launched the ThinkCentre S50 ultra small, a PC which it claims is the smallest in the world.

Small form factor (SFF) PCs now have their foot well and truly in the home entertainment and IT/CE crossover market due largely to their aesthetics, functionality and quietness of operating volume. Westan's Biostar product looks to continue along these lines, offering a multimedia PC with all the performance of AMD's 64-bit desktop processor architecture.

Nominating Sato as our winner for the desktop machines this month was fairly straightforward, especially when compared to deciding the outcome of the closely-fought notebook war. Because, even though the Sato was outdone by one or two systems in terms of performance, nothing beat it on pure value for money.

Small form factor PCs have been around for a while, and barebones PCs for even longer. Traditionally a barebones PC is a basic shell, including a case, power supply and motherboard at minimum, and occasionally tooled up with a few extras like RAM.

The PB2140 from BenQ is a small form-factor data projector with some excellent image nous.

Shuttle's push on the small form factor market has seen the PC finally migrate from the bedroom to become an integral part of the lounge room and entertainment set up. Capable of a number of varied roles, these include file servers, HDTV receiving boxes and media streaming machines.

Five 200GB platters spinning at 7,200rpm in a 3.5in form factor.

The concept of fitting normal PC hardware into a tiny package has been proven to work and small form factor (SFF) systems are now commonplace.

We were hoping we'd have at least one small form factor system submitted for review, and SATO and Friction came together to supply the Draco-M3.

The EVO PC is the smallest barebones in the 'shoebox' form factor we tested this month. It weighs in at the ridiculously low 2.2kg with power supply, but without the Pentium 4 heatsink.

Sony has showcased more than 3000 products for its retail partners at its second Experience More event at Fox Studios in Sydney.

Swiping the hardware from the PC Authority test bench, we went about putting together our Shuttle XPC. Immediately we were confronted by one of the idiosyncrasies of small form factor PCs: squeezing all the hardware in the tiny space inside.