UPDATE: Mine from Iron is called BlockSite. Guess this is trying to ride their rep by using "Block Site". Dropping to 1 star... Check out BlockSite no space...

Used BlockSite on chrome & SRWare Iron. Latest there allowed import/export list to file. This has been simplified to near extinction. I have 448 sites blocked on Iron & I am not entering them one at a time in this simplified garbage... Rated Iron version latest 5 stars. Using BlockSite NOT "Block Site".