Not if you're trying to write in a conversational tone, which is common for many blog post. 'Wanna' has a particular confrontational connotation (possibly a jo

Not if you're trying to write in a conversational tone, which is common for many blog post. 'Wanna' has a particular confrontational connotation (possibly a joking one) that I believe was desired here. 'Want to' wouldn't have had the same effect.