Depending on what your issue is, there are several different ways that you can get in touch with the right person at Memory Alpha:
If you have a question about Memory Alpha, a compliment or complaint, or for "meta" issues concerning the operation of the wiki, post them on the Ten Forward page.
If you would like to contact a user at Memory Alpha, click on their name to be taken to their user page. Then click on the "my talk" link to be taken to that user's talk page.
The two founders of Memory Alpha are Harry Doddema and Dan Carlson. Neither are active on Memory Alpha anymore, but Dan can be reached at email@example.com. Harry can be contacted at firstname.lastname@example.org.
Memory Alpha uses the open source MediaWiki wiki engine. If you think that you have encountered a bug in the software, please do not send it to the developers. Instead, report the bug to an administrator, who will determine what to do with the information.
(Misspellings and false information do not qualify as bug reports! Please fix them yourself instead.)