Linkedin font here refers to the font used in the logo of Linkedin, which is a social networking website for people in professional occupations.
The logo of Linkedin is simply its logotype in bold black with the “in”portrayed in white in a blue rounded box. The font used in its logo is very similar to a font called Myriad Pro. The font is a commercial one and you can purchase and download the font here.
Update: The above is the current logo for Linkedin, while the overall look is pretty similar to the previous logo, the typeface has been shifted from the humanist sans Myriad to the geometric sans Avenir. The font used for it is probably Avenir Black. We are not sure about when the change was made but it is probably sometime in December, 2012 or before, according to their press page. (Thanks for Benjamin’s heads up from France.)
Download Linkedin Font
We are currently unable to find a free alternative or a font similar to the commercial font identified above, and you will need to follow the relevant links above and purchase the font.