1. "I'm working on this problem, but I'm stuck."
2. "Hey, I solved that problem!"
3. "I just read about this amazing thing and I want to share it with someone."
4. "This paper is very difficult to read, help me!"
5. "I'm giving a talk at <fancy name> conference/university, would love some feedback."
6. "I went to this amazing talk at <fancy name> conference/university, let's discuss."
7. "2 is a weird prime."
8. "I've spent a long time on these tedious calculations and need someone to check my work."
9. "I'm trying to learn about this new area, here's what I understand so far - "
10. "I'm trying to learn about this new area, here's what I don't understand at all- "

*And counting - suggestions welcome!