The GlitterbazaarUserActor bot does not crawl sites automatically, but a bot may visit a site on behalf of a user who submits a product page to be added to the site. Because of this, GlitterbazaarUserActor does not read robots.txt.
Here is the user agent of GlitterbazaarUserActor:
Mozilla/5.0 (compatible; GlitterbazaarUserActor; +http://glitterbazaar.org/bot)
Prey Exchange
Product info may not be accurate