||Este utilizador pode contribuir com um nível quase nativo de português.
||This user has advanced knowledge of English.
||Este usuario tiene un conocimiento básico del español.
I have an account on several Wikimedia projects, but I'm mostly active (and an administrator) on the English Wikipedia (and formerly on the Portuguese one), and in Commons. I'm also a board member of Wikimedia Portugal and a volunteer at OTRS and in translatewiki.net. I've participated on Wikimania 2007 and 2010. I also have a toolserver account, as well as developer access to the Wikimedia code repository. Here are some pictures of me.
Information non-related to Wikimedia can be found in my website waldirpimenta.com.
Contribs on all wikimedia wikis 
- There's no log entry of my first Wikipedia account creation, but the first edit that I have record of is from 02:39, 2 February 2005 (uploaded this image)
- Evidence that I edited throughout 2005 without logging in: 
- overall edits: over 45 000 (most edited wiki: commons, with 15k+ edits)
- Krinkle's MoreContributions tool (recent contribs on all wikis, sorted chronologically)
- PathosChild's Cross-activity tool (latest activity timestamp on each wiki, sorted by most recent + user groups)
- Quentinv57's SUL info tool (reg. date, groups, local editcount, global editcount, SUL status - sortable table)
- Purodha's DBsWithUser tool (some of the info above, plus user_id for each wiki)
- Erwin85's xContribs tool (distribution of edits across the Wikimedia wikis)
- PathosChild's StalkToy tool (mostly the same as SULutil, but presented in a neater way, and includes autopatrolled right)
- Dungodung's UserRights tool (summary of Wikimedia-wide rights)
- Automatically create accounts on all wikis, Create userpage/js/css on all wikis
- Most wikis have now this text: [[m:user:waldir|Waldir@meta.wikimedia]]. A few exceptions:
- User page with custom info: en.wikipedia, pt.wikipedia, de.wikipedia, la.wikipedia, en.wiktionary, pt.wikiquote, wikimania2011, wikimania2010, commons, meta, mediawiki, foundation, pt.wikimedia*.
- Disambiguating with User:WaldiR: de.wikipedia, de.wiktionary, de.wikisource, fr.wikipedia
- * = Not on the WMF servers: moved to wikimedia.pt
Random stuff 
- DynamicPageList and Help:DPL
- Wishful thinking: Some projects should be renamed:
- For consistency (so they're all in the form "Wikisomething"):
- Wikimedia Commons → Wikicommons (actually, this should be called Wikimedia, and the foundation... perhaps Wikicontent?
- Mediawiki → Wikiware (or Wikihost, or Wikisite). Also, a different logo, please! "the sunflower represents the diversity of content on Wikipedia, the constant growth and also the wildness." -- not intuitive at all!
- For clarity:
- Wikibooks → Wikiguides (or Wikimanuals), and perhaps merged with Wikiversity;
- Wikisource → Wikiarchive (or Wikilibrary)
- Wikivoyage → Wikiplaces (or Wikilocal)