A couple of things...
The lightest gray that you have is too light. At smaller sizes it will disappear, if it hasn't already. The next-to-lightest gray is almost too light for my taste.
Next, I have no idea what the logo means. I'm *assuming* that the three letters are your initials, since you said you were working on your book/website/etc., but this logo means nothing to me right off. As a consequence, I wouldn't likely stick around to find out what it means.
You can fix this by having different versions of your logo- one for the first viewing, and another for subsequent views. For example, the first time someone sees this mark, it could be accompanied with your name placed below, to visually explain where the letters come from, or what they mean. Then, on subsequent pages, it is already known what the letters mean.