Microsoft critics should mark February 15 down on their calendars. A group of Linux operating system users worldwide, protesting that buying a PC without pre-installed Windows these days is about as easy as buying toothpaste without a tube, have declared it Windows Refund Day. The group was inspired by Australian Geoffrey Bennett, who refused to accept the terms of the Windows licensing agreement that came with his new PC and was thus refunded A$110 (about HK$533) - the price of the software - by Toshiba, the computer vendor. The Linux faction has set up the Windows Refund Centre Web page (www. linuxmall.com/refund), where it advises computer users who do not plan to use the 'Evil Empire's' operating system on how to get a refund on the price of the software. Their movement is based on the licensing terms which state that those who do not agree to the terms should 'promptly contact the manufacturer for instructions on return of the unused product(s) for a refund'. Windows Refund Day is to be marked by a demonstration intended not to raise the roof, but rather, awareness. 'We're going to quietly walk up to the Microsoft office and people are going to turn in their disk, manuals and certificates,' San Francisco Linux user Don Marti told The New York Times. Participants and observers who plan to attend the event are advised by the group to 'act politely to Microsoft employees and to the media'. Why send your 'Dear John' letters over the Web where they can be deleted quickly and not tear-stained by the recipient? Why not prove to your pen-pals that you are capable of writing a letter without the assistance of a spell check? Canada's national postal service is begging people to shift their gear into reverse while travelling on the information superhighway and write old-fashioned letters through a series of feel-good ads that laud the sentimental qualities of snail mail. E-mail has hit profits at Canada Post, prompting its launch of an advertising campaign aimed at 18- to 24-year-olds - a highly computer-literate segment of Canadian society, reports Techweb.com. A University of Toronto professor has said Canadians - who had endured continuous postage rate rises and strikes by postal workers during the important Christmas season - probably would laugh at the campaign.