I've been doing good with my list of keywords for my local site. One of the keywords however was ranked in the 105th position or so. I posted a genuine article yesterday with that keyword. It wasn't a bullshit spinned article with intense keyword stuffing or anything. It was a good genuine article with that phrase in the <h1> tag, mentioned a few times in the article, and once in a picture's alt tag. I have a 17 year old domain name and I've never done anything black hat. I wake up this morning and the keyword phrase is down 196 spots and not even listed anymore on Google. I've heard once or twice that sometimes a keyword has a massive drop before a massive increase. Is this true and do you think this is the case in this situation?