A Free Icon Font For Blogs – Genericons
Genericons is a free icon font that is created with blogs in mind but can fit easily to any website.
It is a project of Automattic (the company behind WordPress) and the icon has items like calendar, arrows, social networks, link, comments... Simply, the most-used ones in blogs.
There are currently 60+ icons and it is documented with examples (can be found in the download package).