Suppose I have some questions that I would like to see answered. May I use the chat to attract (indiscriminately) some users' attention towards my questions?
I suppose you may, but it isn't the preferred way to attract attention to your question. Be aware that most questions aren't answered immediately; it can be a few hours at least before a question is answered. Once your question drops off the main page, though, the amount of attention it garners will decrease substantially. At that point, you could edit your question to add more information and that would 'bump' it to the top of the main page again, so that it would get more attention. After two days, if it still isn't getting much attention, you could add a bounty. But chat isn't the ideal strategy. In addition, it isn't very likely to work; there is very little traffic in chat.CV.
[How did I miss this question before? I have no idea. I've checked meta almost daily in the last three or four weeks, and I think this is the first time I've spotted it.]
The usual ways to get attention:
1) improve your question
2) offer a bounty
3) pique someone else's interest so they offer a bounty
In normal circumstances, I wouldn't suggest you do it in chat (a few people have done so now and then). It's usually only going to catch the attention of active users (who probably saw your question already), and it's more likely to annoy than interest.
On the other hand, given how empty chat is, just lately, it might be worthwhile just having anything vaguely relevant post there. I just today posted some nonsense there because it had been silent for 8 days - I wouldn't want it to freeze just when I need it.
What question(s) needed attention?