Most Helpful Girl
Depends on the nature of their advice. If it sounds reasonable and makes sense, by all means use it. I do think it can help if you get someone answering who has experience with dating and relationships though. How things should be in theory is not always how it is in practice. It's just a different perspective, and one that someone who hasn't dated may not have.
Most Helpful Guy
There's absolutely nothing wrong with listening to people with no practical advice. Sometimes impractical advice is exactly what you need.