I've been reading through your projects and there are some technologies that might be helpful. There is no way for me to teach you ALL of these; however, I can try to keep a list of technologies you might find helpful. Please feel free to add to these as you come across really helpful solutions.

AIM

• Wimzi: A tool to connect your aim name to your website; Users can IM you straight from your website

• Meebo Instant Messaging for several online IM Networks (AIM, Yahoo!, MSN, Google Talk, Gmail, Myspace IM and Facebook Chat)

• Skype Telephone & Video Calls/Instant Messaging

Calendar Functions:

• Google Calendar: Easy additions, maps, and code to embed directly into your site
• Upcoming:This is a great community-oriented site, with friends and comments attached to events
• Yelp:Reviews and calendars of events

Collaborative Online Documents:

• Google Docs: Online collaberation tool for Presentations, Spreadsheets, Word Processing, and Forms.
• Ajax: Online Presentation and Word Processing collaberation and syncing.
• Dropbox: Online Storage Solution
• Abrobat Meet live over the web and share your screen with anyone

Flikr:

• Quick Flickr: Widget: Display up to ten of your latest Flickr submissions in your sidebar.

Free Image Editing Software

• Gimp: Free image editing software similar to photoshop, versions are available for mac and linux users.
• IrfanView: Another helpful tool to quickly edit images.

Free Screen Capture Software

• Jing
• Bobyte.com
• AviScreen
• Camstudio.org
• Screencast-O-matic
• Wink

Live Blogging:

• CoverItLive: Check out this live blogging platform that can be used to conduct chats (written and voice) along with integrating a variety of social media. 

Virtual Notetaking:

• EverNote- Virtual notetaking and multi device syncing.

Social Networking Software:

• NING: You can check out the About section to see all the cool tools available with the software.
• Facebook: Create a group, upload videos and pictures
• Page Badge: A Facebook application that allows you to easily create a badge for a page, group, or event

Sign-Up/ListServ Groups:

• Google Groups:
• Yahoo Groups:

Streaming Video:

• Seesmic: Streaming video chat
• Ustream: Live streaming video chat online 
• Viddler.com: Video Uploading site. No time limits, "Pop-up Video" feel. Mathena_Viddler.pptx
• Vimeo.com: Video Uploading, File size limit weekly, Great HD quality.

Twitter:

• Buzzable: Another tool for aggregating Tweets on your site or your group.

• JustSignal: This allows you to aggregate Tweets around a topic or a people right on your site. Wicked awesome.

• WWWitter: A place where you can add a tool to your toolbar and check out who's Twittering about your website.

WordPress:

• Picture Plug-ins: Many of you are looking for ways to add pictures to your sites (from mobile uploads to Flickr sites). Check out some of these plugins.

• WordPress Mobile: Make your blog mobile friendly.

• Uploading Mobile Images: Here's a plugin to allow you to upload to a Flickr account, which you can then display on your site.

• BuddyPress.org : Here's a plugin that turns your WordPress Blog into a Social Network Platform.

• XML Google Maps: This plugin allows you to insert Google Maps to your WordPress blog.

• Events Calendar: Shows different events that you have coming up.

• Search Feature: Allows users to search exactly what they're looking for.

• WP-SpamFree:  An extremely powerful anti-spam plugin that virtually eliminates comment spam.

• All in One Video Pack: This is not just another video embed tool - it includes every functionality you might need for video and rich-media, including playing, uploading and editing.

• All in One Video Pack Sidebar Widget: A sidebar widget that allows you to display the most recent posted videos and comments in your blog.
• EasyRedirect: Plugin to easliy redirect to another page with javascript
• Add To Facebook: Adds a footer link to add the current post or page to a Facebook Mini-Feed
• Sidebar Login : Adds a sidebar widget to let users login
• Sociable : Automatically add links on your posts, pages and RSS feed to your favorite social bookmarking sites.
• My Page Order : allows you to set the order of pages through a drag and drop interface.
• Ozh' Admin Tools : Admin tools for your wp-admin page.
• Riffly Video/Audio Comments: Mixed video and audio comments integrated with the standard comment system.
• Daiko's Text Widget: Post Text
• Comment License - Show license terms for your comments form.
• ShareThis - Let your visitors share a post/page with others.
• Redirectify : A plugin that redirects posts and pages that contain a certain meta tag.
• WP-reCAPTCHA : Integrates reCAPTCHA anti-spam solutions with Wordpress.
• Youtuber : Easily allows you to embed YouTube videos into your posts.
• WP Wall : Readers can add a quick comment about the blog as a whole, and the comment will appear in the sidebar immediately, without reloading the page.
• Paypal Donate : Connects to your Paypal account and allows visitors a place to donate to you
• Viper's Video Quicktags: Set a standard size and color for all embedded video, works well with youtube, metacafe, dailymotion and other sites.

• Themes:

  • Linux - Wordpress Theme with two right sidebars.

  • Fashion Magazine 1 - Theme wtih image gallery slide show

  • Grunge Music - Theme with guitar and a right side bar

  • Sliding door- Images at the top slide to link to other page with left side bar

  • Azul 1.4: clean and modern theme with a techy/corporate feel.

  • Yashfa: A very modern, single column theme.

  • Pixeled: Sleek, Good Contrast theme.

  • Noir: dropdown page menu, valid XHTML, lots of comments ,fixed width, 3 columns

  • Cute Critters: Colorful illustration on top, right sidebar, rounded corners, widget ready

  • Ahimsa:  Customizable colours, low graphics, minimal distractions, collapsible sidebar, with rounded corners in Firefox, Safari, Chrome.

  • Reckoning: Black background with grey text and blue/green accent colors. Simple and fun with left sidebar.

  • WordPressThemesBase: Large collection of free to download themes for WordPress.