One nice feature for any blog or site (especially news sites) is to have a little list of forthcoming events that would interest your readers. One way of collating this information is to scour the web and update the list manually. However, this is time consuming and tedious, especially as there is an easier way to do it.
Have a look at the Yahoo site called Upcoming. On this site you can search for events on lots of different subjects in lots of different locations all over the world. Also, if you have an event you can put it up on the site.
Because all of the searches can be accessed via RSS it is possible to use SimplePie to collate these results together. The following script will take two arrays, one of locations and the other being the subjects. It will then create the necessary RSS URLs and use the multi-feed aggregator feature of SimplePie to collate all of the different events into a single array. All the script needs to do after this is run through the array and remove duplicates and sort the data by date.