Blogger is a blog-publishing service that allows multi-user blogs with time-stamped entries. It was developed by Pyra Labs, which was bought by Google in 2003. Generally, the blogs are hosted by Google at a subdomain of blogspot.com. A user can have up to 100 blogs per account. Up until May 1, 2010 Blogger allowed users to publish blogs on other hosts, via FTP. All such blogs had (or still have) to be moved to Google's own servers, with domains other than blogspot.com allowed via custom URLs. Unlike Wordpress, Blogger cannot be installed in a web server. One has to use DNS facilities to redirect a blogspot domain to a custom URL.