Wordpress is pretty popular these days. It always help to have all the useful plugins that make everything easier. Check out the list below, you might find one you like.
The Gigya Social optimization plug-in aggregates authentication and social APIs from Facebook, Twitter, Google, Microsoft, Yahoo, LinkedIn, AOL and other OAuth & OpenID providers, giving sites the ability to authenticate users via social network and OpenID providers and increase site traffic by allowing users to easily share content with their friends and followers.
The plug-in is scalable and secure, using a standard authentication techniques to prevent account spoofing.
Simple:Press is a feature rich, completely integrated and fully scalable forum plugin for WordPress. It is fully customizable (packaged with various themes) and is fully scalable no matter what your sites membership number is.
Also included is a Private Messaging sub-system, the ability to link blog posts with forum topics, the capability to extend the forum display with custom code, a number of template tags for use outside of the forums, extensive online help that explains every option and full language support.
Commentpress is an open source theme and plugin for that allows readers to comment paragraph by paragraph in the margins of a text. Annotate, gloss, workshop, debate: with Commentpress you can do all of these things on a finer-grained level, turning a document into a conversation. It can be applied to a fixed document (paper/essay/book etc.) or to a running blog. This makes the overall discussion on the topic easier and also increases the level of interaction.
TDO Mini Forms allows you to add highly customizable forms that allows non-registered users and/or subscribers to submit and edit posts and pages (all configurable) . New posts are kept in “draft” format until admin reviews, edits, previews or publishes them (also configurable). It can optionally use Akismet to check if submissions and contributions are spam.
It is by far and away the most powerful and feature-rich plugin for news submission on this page – Not only can TDO Mini Forms be used as a to create a ‘submitted news section’, it can also be configured as a Contact Manager, Ad Manager, Collaborate Image Sites, Submit Links, etc.
TDO may be a little bit too much for most sites, but is certainly a plugin you should consider.
The Community Submitted News plugin allows your readers to submit categorized articles directly to your site. The article submissions have their own dedicated moderation panel were you can review, edit and preview before publishing.
WordPress Wiki is an amazing plugin, from the developers of the WP e-Commerce plugin, that adds Wiki functionality to WordPress. It allows you to specify particular posts which can be edited by your users as a wiki page and leave other posts in the un-editable format.
FV Community News, just like the Community News Plugin above, is a plugin that enables the users to submit posts from various resources to your site for inclusion. This very effective plugin has a user-friendly moderation panel (review, edit and preview) and will display the published news items via a sidebar widget or on a dedicated page (it does support pagination).
This plugin does allow for image uploading, offers configurable responses and comes with a built-in RSS Feed