Downsizer is a virtual community , run on a not-for-profit basis, which is itself a „resource for people who want to live more sustainably“.  Its website includes articles on sustainable living and a popular forum with over 4,500 registered members.
The site was set up in October 2004 by the founder members. Its name is a self-reliant and sustainable lifestyle. [ citation needed ] A year after Downsizer’s establishment, the Essex Chronicle remarked on the site’s growth, observing that it had „tapped into an increasing awareness and interest in the impact of our lives on the environment“.  It has continued to grow, and has over 4,500 users registered on its forum as of July 2011.
Downsizer.net is a not-for-profit online community, a resource for people who want to live more sustainably. Like-minded individuals can visit the forums to discuss matters of self-sufficiency and sustainability among other things. The website also includes many articles related to downsizing issues including the following:
- Growing fruit and vegetables
- Raising livestock
- Recipes, Preserving, Homebrewing / Winemaking
- Foraging for wild foods
- Energy Efficiency & Construction
- Fishing Shooting & Trapping
- Recycling Conservation & Environment
The website received a positive assessment from Alison Cork in The Observer , who commented on the subject of topics discussed by members and concluded, „Whether you’re an individual wanting to live a more sustainable lifestyle or a small business trying to get an appreciative market for your ethical product or service, you’re looking for something else. “ 
A more negative stance was taken by Steve Lowe and Alan McArthur, authors of Is It Just Me Or Is Everything Shit? (2005). In their article in The Sunday Times to promote their book, they present the interest of „burnt-out stockbrokers“ in the paper provided by Downsizer as an instance of the „mediocrity“ of contemporary British culture. 
- Jump up^ „About us“ . Downsizer . Retrieved 2007-03-30 .
- Jump up^ „Growing concern“. Essex Chronicle ( LexisNexis reprint) . 2005-11-04. p. 11.
- Jump up^ Alison Cork (2005-10-23). „Alison Cork’s finishing touches“ . The Observer . Retrieved 2007-03-30 .
- Jump up^ Steve Lowe; Alan McArthur (2005-11-06). „Is modern life going down the pan?“. The Sunday Times (LexisNexis reprint) . p. 14 (features).