One big problem that can plague Q&A sites is the subjectivity within the variety of topics. In our community one person might find it interesting to deal with algebraic geometry, while another will find that tedious and would prefer to work on Banach spaces, and so on.
How should we avoid (as best as possible) from the use "Interesting" and similar words, as well "Easy"/"Hard" adjectives - preferably both in the body of the post as well in the title?
From one side it is not unusual that the OP finds the question interesting, and hopes that others may share his enthusiasm, while on the other hand it can be quite tiresome to see "Interesting X" (replace X by something you find tedious) lurking on the front page.
Edit: To clarify, while I do not like the use of subjective words in titles I do know that at times they are used in a particular way, and I am willing to accept this occurring, what I cannot stand (which explains why I usually sit down when checking the website) is the titles that reveal absolutely nothing about the question and being subjective.
Some examples: (no offense to the askers)