In recent years, URL shortening services have gained a considerable popularity thanks to the large success of Twitter. These services (such as ThinyURL, Bit.ly, WP.me) provide Twitter friendly short aliases for redirection of long URLs.

A valuable use of these services is their integration with the pages of your WordPress blog so as to give to visitors short URL addresses ready to be shared on the popular microblogging service.

Source: 5 Practical Ways to Integrate URL Shortening Services on Your Blog

CoPilot is a WordPress theme which takes advantage of the WooThemes Tumblog plugin (Express App). Publish quick posts from WordPress’s dashboard or your iPhone using the Express App. You can also just use the theme as a regular WordPress theme.

Pricing: $30
Requirements: WordPress 3.0+
Source: Buy It Now

FourSquare Integration shows your last Check-ins on your wordpress blog/posts and also in Sidebar. Foursquare is primarily for letting your friends know where you are and figuring out where they are. Secondarily, it’s for collecting points, prize “badges,” and eventually, coupons, for going about your everyday business.

Pricing: FREE
Requirements: WordPress 2.8+
Source: http://wordpress.org/extend/plugins/foursquare-integration/

JournalCrunch WordPress 3.0+ theme is a theme for magazines or portfolios with an integrated journal. The theme is released under GPL. You can use it for all your projects for free and without any restrictions.

Pricing: FREE
Requirements: WordPress 3.0+
Source: http://www.smashingmagazine.com/2010/12/09/journalcrunch…

Snow WordPress Plugin lets you create snowflakes (and more) falling down your blog! There are snowflakes, leaves, drops – and balloons that can float upwards. You can simply add more images in the pics folder and they will appear on the settings page.

You can configure the number of snowflakes and limit the plugin to specific posts or pages. If you enter something into the URI field you will only see snow if the URI of your page matches the string. No fancy regexps.

Pricing: FREE
Requirements: WordPress 2.1+
Source: http://wordpress.org/extend/plugins/nksnow/