query_cache_type = 0 vs query_cache_type = 1

Question

Recently, I moved from standard MySQL to Percona, and used the Percona Wizard to generate my.cnf.

However, I can see that, by default, the generated settings for my.cnf use query_cache_type = 0. (query cache is disabled).

The only thing I run on the server is a Wordpress blog. My questions are:

1. May I enable query cache?
2. There are some Wordpress plugins that offer database cache. Is the result similar of enabling query cache?