Automatic reverse lookup now added to http://www.goggo.com/cgi-bin/branchFind.cgi* .* So there are now four principle uses, once you have got your STR Branch Code: 1) You can graphically see in the maps the frequency that various countries/regions are listed as the place of origin (for the most distant known male-line ancestor), as reported in the various FTDNA Projects, for others in your STR Branch; 2) You can see what sort of SNP alleles (either positive or negative) that others with similar STR Branch Codes have; 3) If you know someone else's STR Branch Code, then by marking the two code positions in the tree, you can follow the two branches back to where they join, and read the horizontal axis to get an idea of the date when you might have had a common male-line ancestor (add a larger margin of error to that date though); 4) and finally with the automatic reverse lookup, you now get a list of FTDNA Kit Numbers, and Ysearch ID's and other details, for people that closely match your own STR Branch Code. Terry