Text: the 'green economy' is still an emerging concept.

Correct capitalization: The 'green economy' is still an emerging concept.

Text: these user pages have been visited 6637 times since 4/7/2011.

Correct capitalization: These user pages have been visited 6637 times since 4/7/2011.

Text: ideal location, in the centre of fazana, just a few minutes walk from the historical city centre.

Correct capitalization: Ideal location, in the centre of Fazana, just a few minutes walk from the historical city centre.

Text: it supports preview - users can choose to preview the input files before converting7.

Correct capitalization:
It supports preview - Users can choose to preview the input files before converting7.