The internal structure, the Fields of a MicroContent Item defines the MicroContent Type. Many Fields however are very common and appear in many MicroContent Types. I present here the most common Fields:

• title - a single line, which describes the MicroContent Item;
• description - the is the basic field. Usually it is just a piece of text;
• Tags - a list of words, which describes the MicroContent Item The publisher determines the tags he uses. There are some ideas in standardising some tags around (2254, 2583, 2208);
• geotag - this field allows a user to define the earth location (longitude and latitude) of an Item. (2421, 2407, 2305, 3101, 3103, 3107);
• author -  any Item is created by someone, it has an author. I think any Item should have an author or source otherwise it will be anonymous. (2576);

One should distinguish between the type of the field (text, integer, real, uri) and the semantics. For URI one sees that one tries to encode the semantics through a rel= tag. (2288, 2278, 2199)