I knew all those names before grabbing this one.
It is short and crisp for studying, or researching trends.
No body would love to type StudyingTrends.com, or StudyTrends.com, TrendStudying.com better than TrendStudy.com
The rhyme and sound comes with TrendStudy.
Study has myriad meanings in itself.
Study also means a room used or designed for reading, writing, or academic work.
Thanks for your opinion though.