Blogging is about a lot of things, but one of the most important one of them surely is information sharing.
I assume my readers know about the existence of youtube, google, myspace, wikipedia ect. Of course you do. Well, I have a treat for you: Here’s one online ressource you probably didn’t know about: Mathworld.
It really is a wonderful site, and unless you are like an expert on cryptography working as a codebreaker for the NSA or something like that, there are very few questions you would be able to ask about math that this site is unable to answer. Wikipedia is no longer my first place to go for mathematics anymore, as this site is superior in this area.