I dont understand the significance of uploading to gedmatch under an alias..its your dna..it matches who it matches..dna cant lie.
Ftdna has alot of matches when you upload your raw dna, however with all the sites, they are only good when people upload to them. I have uploaded my tree to FTDNA too, I havent put anything but the basics on My Heritage. I have also uploaded my full tree to Gedmatch. I found a single match on Dna land
I only bought a basic subscription to Ancestry, just Uk and Ireland, never thinking that that so many people in different branches of my family have emigrated. America, New Zealand,Australia, then there are the people that come from France, Germany, Italy, Greece in my DNA matches. I havent subscribed as yet to a worldwide membership, Im relying on a kind cousins log in! and the people that upload a tree to gedmatch. The good thing is in England you can use the computer at the library for free and they have Ancestry.com world membership for free Unfortunately, we cannot access alot of the sites from here in Turkey and I have to rely on people that can access freesearch for tree info too. Still, im loving the results of my DNA test and have found many long distance cousins.