textboards

I want to make my own textboard in C fastcgi using files instead of a sql database.
Does it sound like a good fast idea?

I just want it to be blazingly fast.

What do you think /prog/?

Use SQLite. Databases are just file libraries, implementing what you would implement by hand if you didn't have them. Most of them work in a client-server fashion, but embedded servers like SQLite work just like any other library, which happens to have a command interface called SQL. SQLite is like 250 KB, blazingly fast, and very easy to use.