Sol Lederman recommends that everyone take a look at Federated Search: The year in review, a review of the major events in the federated search industry in 2007, from the Federated Search Blog. 2007 saw commercial entities making odd business decisions, mergers and acquisitions, and new open source options.
For those of you not familiar with blog carnivals, here is a paragraph taken from the Blog Carnival Frequently Asked Questions:
A Blog Carnival is a particular kind of blog community. There are many kinds of blogs, and they contain articles on many kinds of topics. Blog Carnivals typically collect together links pointing to blog articles on a particular topic. A Blog Carnival is like a magazine. It has a title, a topic, editors, contributors, and an audience. Editions of the carnival typically come out on a regular basis (e.g. every Monday, or on the first of the month). Each edition is a special blog article that consists of links to all the contributions that have been submitted, often with the editors opinions or remarks.
For this federated search blog, the Infosciences Carnival is the one best fitted to our content. I encourage the readers of this blog to read the articles published by the Carnival host as there may be articles of interest to the federated search community. I plan to submit posts regularly to the InfoSciences Carnival to include the information sciences community in our discussions.