Needle in a haystack

So how do you tell if you've blogged about something before? I've tried the Google site search facility (in the Google search bar type in "site:xxxxxxx yyyyyy" substituting the name of the site you want to search for the xxxxxxx and the words you want to search for as the yyyyyy.) While this works well on some sites, it doesn't for the blog (and you'd be amazed at how often one wants to check their own blog for information/making sure not to repeat oneself too often/etc. etc.) Well, now there's the Technorati site. By choosing the SEARCH tab, and then under OPTIONS, you can select to search a specific blog. Works a treat. (Now if only I could remember what it was I was going to look up I'd be a happy person.)