GPWEEK is a free online magazine that is available weekly. It covers a few different areas of motorsport including Formula 1, MotoGP and World Rally Championship.
The Formula 1 content is extremely well written and insightful, and as the magazine doesn't have to wait for printers, it is up to date and informative. GPWEEK is available every Monday, and after a race weekend it is full of all the gossip from the paddock, including results, analysis, and a team by team review. The pictures are sometimes stunning, and even though I skip through the non-F1 content, I do find all the pictures worth looking at. The very last page of the magazine is a "Parting Shot" and it's always something fascinating.
The online distribution model is an interesting one. The magazine is available to view online, assuming that your browser allows it. You can scroll through the pages of the magazine, which is displayed in a regular page by page fashion. Where there are advertisements you can click on the links if you want to visit for further information. If you want to keep the magazine, or can't view it on the browser, there is a PDF download available. The pictures are of inferior quality to those on the web, but it is another format to read it in.
My favourite thing about the magazine though, is that you can sign up to get email reminders that it's available. Every Monday morning I open my inbox and find the reminder that tells me GPWEEK is available. I head straight there and browse through the F1 contents, enjoy the pictures, and then carry on with my day. Without the email, I probably wouldn't remember to go there, but I think that's more of a reflection on my memory than the quality of the magazine.
There have so far been 27 issues of GPWEEK, it started in March 2008. All the previous issues are available in the archive for download, as well as the high quality online version. I highly recommend GPWEEK as worth a look, it's free and very easy to use.