It is probably not a nice thing to see to start many topics at the same time.
Make the Topics that are created unique, make sure they haven't posted before and make them posts of higher quality.

Posts such as,
Whats your favorite color?
Whats your favorite car?
are low quality.

High Quality posts would be posts that help the community or a question that you might have that hasn't been answered before.

These are just examples.