MyBlogLog was a social network for the blogger community that was based in part on interactions facilitated by a popular web widget that many members install on their blog. Bloggers signed up for free accounts on MyBlogLog and can initiate a blog community for one or more blogs they authored. Other registered members could subscribe to these communities, effectively bookmarking them for future reading and sharing them with their own contacts. Bloggers could then display widgets on their sites which show MyBlogLog online community members who had recently visited their page. These widgets also contained links to visiting members' community pages, and are one way in which users connected with one another. All members could see certain basic information about how many people visit their blog, what links they clicked and where they come from. Members could also view more extensive information about traffic on their site for a monthly fee.

MyBlogLog communities revolved around an individual blog registered by that blog's author. These communities had anywhere from a few to thousands of members. Communities that are particularly popular, had the most members or that are brand new were featured on the MyBlogLog Communities page. Members can also find communities via searches for key words or tags.