For this project, we combined three older websites into one new fresh website. We were able to achieve this successfully because of the Drupal Framework, the available Drupal modules, and the ability to easily incorporate our own custom PHP code into Drupal.
Kvitters Here you can search various microblogging sites like Twitter, Meme, Digg, Identi.ca and others based on most happening keywords in the world. On the homepage, we list the most popular keywords that are being searched by the people across the world. You can see what are the search trends across the world. What people are searching in various search engines. Then you can find what people are talking about these topics on Twitter and other MicroBlogs.
As someone building a local community site, I'm always curious to see what other people do. I've found some here and there, mostly by accident, but was thinking that it would be nice to make a thread to gather them all.
I'll start us off with mine but keep in mind that it's not even close to being finished and this isn't meant to be a showcase about my site. :) Coulee Region Online covers the area of SW Wisconsin, SE Minnesota, and a bit of NE Iowa and NW Illinois.
I am an anxiety book author and went live with my website about a year and a half ago. I love Drupal and this community has been very helpful in helping me figure out my millions of questions about customizing my site.