That is generally how most sites get away with it(e.g. Wolfram Research's Math World). Since most fourms/blogs/etc. have little in the way of formatting, and word processing, your best bet is to make a .gif or .png image of your formula(e) and then use the img tag to insert it. for HTML, [] for BBCode, I believe.
The Master said: "It is all in vain! I have never yet seen a man who can perceive his own faults and bring the charge home against himself."
-Analects Book V, Chaper XXVI
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The Master said: "It is all in vain! I have never yet seen a man who can perceive his own faults and bring the charge home against himself."
>Analects: Book V, Chaper XXVI
The Master said: "It is all in vain! I have never yet seen a man who can perceive his own faults and bring the charge home against himself."
-Analects Book V, Chaper XXVI
---
The Master said: "It is all in vain! I have never yet seen a man who can perceive his own faults and bring the charge home against himself."
>Analects: Book V, Chaper XXVI