Every wiki page has an associated talk page which can be used for discussion and communicating with other users. Talk pages can be accessed by clicking the Discussion tab at the top of the page. Simply edit the page as normal to add your comment.
A talk page is actually very similar to any other wiki page, but it is in the 'talk' namespace, to keep it separate from the articles in the 'main' namespace (Talk:xxx) As with any wiki page, you can change it, link to it, and see the history of the page.
Rules for changing talk pages
Having discussions on a free-form wiki page will seem strange at first. It helps if everyone follows some simple rules:
and always be nice.
Here is an example discussion, following the talk page rules:
Having discussions on a free-form wiki page will seem strange at first. It has some advantages over the conventional rigid forum format, but it can get a little messy. As with other wiki pages, anyone can help with tidying up discussions, to conform to the editing conventions e.g. add signatures and headings where they are missing.
Clearly we also have the opportunity to edit other people's comments. It is generally bad etiquette to modify somebody else's wording (Better to just add your own comment with your corrections) But it can be acceptable to...
A talk page is actually very similar to any other wiki page, but it is in the 'talk' namespace, to keep it separate from the articles in the 'main' namespace (See Help:Namespaces) As with any wiki page, you can edit it, link to it, and view the editing history.
Building articles - Discussing articles
It is usually best to keep focused on the task of building a wiki article, and use discussion pages only to support this process. The topic of conversation should generally revolve around what needs to be done to make the associated article better. Remember that editing the article itself is often a more effective means of communicating. It can be more difficult, requiring you to balance your views alongside those of others, but it can also be more rewarding. This is how the community of wiki editors will make progress. Often it will feel more natural to engage in heated debate on a talk page (or indeed any other contact channel) but in fact the wiki article itself can offer a powerful means of reaching middle-ground. Think about how to portray both sides of the argument (e.g. listing advantages and disadvantages) and you may find the debate evaporates.
User Talk pages
A "user talk page" is a talk page associated with somebody's "user page" (See Help:User page) This is a place to leave messages for a particular wiki user.
This can function as a kind of messaging system. Users receive a prominent notification when new messages have been left on their talk page. They may be notified by email as well, although this cannot always be relied upon (since the email notification feature must be activated by supplying a valid email address, and clicking a confirmation link). If you don't get a response to your user talk page message, try looking for other contact details which they may have supplied on their user page.
Note that the messages are not private, and others can join in the conversation.