The Yahoo! Podcast site, launched in beta on Monday, features a directory of podcasts and enables consumers to rate and review podcasts. The site is being pegged as a resource for all things podcast-related, providing users with tools such as a how-to guide explaining how to create your own podcast.

Popcasts is an aggregator of the most popular podcasts from many different directories and ranking sites, all on one page.

A search engine that will allow users to search within a Podcast has been launched on the web this week. Called Podscope, the engine will make every word searchable within a podcast, enabling the audio indexing of podcast content.

The user can search on a term, generate a list of results ranked by a variety of methods to find the most relevant podcast and click to play or click to download.

The company behind the free service has been indexing television and radio broadcasts since 1999.