Started 26 September, 2001 - first not on Bomis server but on rozeta. It was transferred on Bomis server on 12 January 2002.
Areas of strength
- Vibrant, large community
- History and geography of Poland and neighboring countries
- Chemistry and physics
- Fantasy and computer games
- Many good photographers
- Good system of handling and transferring images to Commons
Areas of weakness
- Chaotic structure - especially help and policy pages (although it is constantly improved)
- Very mixed quality - some areas are really good - some others are very poor
- General poor quality control - many vandalisms, hoaxes, articles written by newbies and not improved by others
Who are the competitors (print, online)?
- Wydawnictwo Naukowe PWN - and the selection of their printed, on DVDs and on-line encyclopedic products.
- Onet.pl - the most popular Polish portal and its "Portal of knowledge".
- Interia.pl - the most popular Polish portal devoted to young people and its "Q & A" service and encyclopedia.
Prominent milestones/events 
- 12 January 2002 - transfer on Bomis server
- 22 December 2002 - registering www.wikipedia.pl by a group of 15 donators from community
- 22 May 2003 - 10 000 articles.
- 17 May 2004 - 30 000 articles.
- 4 September 2004 - first wikiportal was created (Fantastyka).
- 1 October 2004 - Polish Wikipedia reached 1 million visitors per month.
- 31 December 2004 - "50 000 articles by the end of the year action" - was successful (at least in terms of number of articles... not necessarily by the quality of them).
- 22 February 2005 - Polish Wikipedia ranked 18th most popular Polish webpage according to the Internet Standard.
- 16 September 2005 - 100 000 articles reached.
- 23 January 2006 - Polish Wikipedia ranked 9th most popular Polish webpage, and no. 1 in "educational" category, according to Internet Standard.
- 17 February 2007 - 350 000 articles.
- May 2003 - first "real life" meeting of Polish Wikipedians - Harenda Club in Warsaw (around 15 participants).
- 14 August 2005 - first Polish Wikimedia conference - where Polish Wikimedia Chapter was established - 33 participants.
- 15 September 2006 - 5th anniversary of Polish Wikipedia - a meeting and celebration with Jimbo's lecture given to the general public.
What language features are challenging?
- Same as on German Wikipedia - linking is more complicated than in English as many words have prefixes and postfixes.
- Problems with sorting of articles which have Polish characters in the beginning of article's titles
- Some users complain that they cannot see Polish characters.
What would surprise the outside reader about the community?
- Probably lots of discussions and high number of trolls
- Too many complicated regulations - which are quite often completely ignored, or actually they have "to be approved" status
- Many decisions are made by voting, not by consensus.
What are some unique practices/characteristics?
- Deletion policy is based on strict 50:50 voting
- There is no clear policy what it might or might not be put in articles - every single case is decided by voting.
- It is very difficult to become an admin (80%+1 votes for) - but it is very difficult to loose this status as well - till now only one admin lost his status.
Who were the earliest participants, who started it?
Other prominent Wikipedians?
- Well - it is very delicate question :-)
Static versions 
First static version on CD was issued by "Enter" magazine on August 2005. The issue was illegal. (Logo and name of Wikipedia were used without permission of Wikimedia Foundation).
Second static version on DVD has been prepared in cooperation with Helion.pl. It contains 239 000 articles and 59 000 pictures, based on clean-up dump from 4 June 2006. The final product preparation was finished on 20 January 2007. The final DVD ISO file takes around 8 GB. The date of release of the first official edition of the DVD is planned for the end of April 2007, but this date may still be changed.
First test made by Polimerek on 10/04/07 Using alt-shift-x (to display a random page) 50 times I got:
- 19 "decent" articles
- 14 "stubs"
- 17 stubs produced by bots and list pages.