Molly-in-md is the pseudonym of a long-time Wikipedia user and, since 2006, an occasional editor. She says:

If I see an error in a page, I will fix it. The most common fixes are grammatical and punctuation errors. They drive me crazy.
What are my qualifications? I am technical writer and editor in my paying (part-time) job and I'm good at spotting errors. It's a chicken-and-egg thing: am I an editor because I have a good eye, or do I have a good eye because I'm an editor? Doesn't really matter. Wikipedia benefits.

Just for fun, here's a list of her edits.

If you have spare time, consider helping to clean up Wikipedia:

• list of articles that need copy editing, by alpha order at http://en.wikipedia.org/wiki/CAT:COPYEDIT or by date at https://en.wikipedia.org/wiki/Category:Wikipedia_articles_needing_copy_edit
• list of articles that are orphaned (without being referenced in any other articles), at http://en.wikipedia.org/wiki/Category:Orphaned_articles
• citations that need to be conformed to WP:CT so they don't succumb to link rot, listed at https://en.wikipedia.org/wiki/Category:Articles_with_bare_URLs_for_citations
• citations that need formatting, at https://en.wikipedia.org/wiki/Category:Articles_needing_footnote_reformatting
• citations that have duplicates, at https://en.wikipedia.org/wiki/Category:All_articles_with_duplicate_citations

Here are some helpful links when editing a Wikipedia page:

• how to tag a page for problems: http://en.wikipedia.org/wiki/Wikipedia:Tagging_pages_for_problems (see lists of tags at the bottom, especially for cleanup)
• citation templates at http://en.wikipedia.org/wiki/Wikipedia:Citation_templates (or a list of a bunch of specialized templates, at https://en.wikipedia.org/wiki/Help:Citation_Style_1)
• shortened footnotes at http://en.wikipedia.org/wiki/Help:Shortened_footnotes
• automatic conversion templates at http://en.wikipedia.org/wiki/Template:Convert
• common tags at the top: for additional citations (http://en.wikipedia.org/wiki/Template:Refimprove) or for an article that has no citations at all (http://en.wikipedia.org/wiki/Template:Unreferenced) or to demand additional inline citations (http://en.wikipedia.org/wiki/Wikipedia:Inline_citation)
• what to do when a link goes dead: https://en.wikipedia.org/wiki/Wikipedia:Citing_sources#Preventing_and_repairing_dead_links
• how to use the IMDB tag: http://en.wikipedia.org/wiki/Wikipedia:IMDB#IMDb
• information about the Guild of Copy Editors, including the GOCEinuse tag and a list of checkmarks

Update: have received AWB approval, at http://en.wikipedia.org/wiki/Wikipedia_talk:AutoWikiBrowser/CheckPage, but need to download the software.

This user is a member of the Guild of Copy Editors.