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|User since||April 24, 2014|
|Number of add-ons developed||0 add-ons|
|Average rating of developer's add-ons||Not yet rated|
No issues. I keep my UA set to a custom string and never change it. This extension works well for that purpose. If you need to switch often or desire common presets this might not be for you.
Also, pasting works fine. Not really sure what that other reviewer was going on about.