I like your concise summaries.
Here's mine from my TMF profile:
Edison Cylinder Phonographs, especially high-end external horn and early Amberola models, Pre-1915 Edison Disc Phonographs, Pre-1915 Victor Talking Machines, especially high-end external horn models, Berliners, Columbia Cylinder Graphophones, Pathephones and miscelaneous gramophones, all types of pre-1930 cylinders and discs, related accessories and advertising.
Probably not as well focused as yours but if everyone posted a summary like yours, or mine above, to thier profile, it would be a great way to see what everyone's main interests are
