RDFa, Microformats and Microdata provide easy ways to include semantic markup. Are there any other similar technologies ?
Thanks
RDFa and microdata do not do very different things. All three formats do approximately the same thing in different ways, with RDFa and microdata being very similar.
Read Manu Sporny's Uber-comparison of the three for more details: http://manu.sporny.org/2011/uber-comparison-rdfa-md-uf/