G's algo already has built in features to move your sites up or down at any time, it's not new. Remember? We used to call them regular automatic or manual review penalties, not big updates to the algo that affect everyone near the same time. It doesn't take a team of Google engineers to penalize your site every time it happens, it's just the latest algo doing it's job. Now the Penguin update of April 24, 2012... now that was a fucking update. I can never remember dates, but I'm sure many of you will remember that day of reckoning for some time. So if your site(s) drop suddenly, almost every time it's because they gave you a chance but you set off too many red flags with too much or poorly done BH seo, or Google is literally fucking with you... [related side note rant, skip if you want: they've patented it, don't know if it's implemented yet, but if their algo catches a certain amount of red flags but can't be sure if your site is gaming the system, instead of having a manual review (to save money) they'd just drop your rankings artificially to gauge your reaction as to whether you get scared off and stop building links or keep on building. If you stop your backlinking close to when they drop your site, they'll make sure it's not just a temporary test drop, all done automatic. Pretty smart, but then again your site can still hit #1 for months with Russian footer links before they catch on to this day, like they want crap ranking in certain niches so people use adwords more. But make sure to keep the travel, health, insurance, etc.. niches clean. Just a theory, but there is a patent they have akin to this]. There is a popular thread going on right now that started recently, speculating on another G update. Yet there hasn't been an update since Panda #24 a couple months back. I even bought into it for a bit and let my paranoia get the best of me and thought maybe they'd come out with an update announcement because of changes I saw in rankings when the thread was started. I found the reason my site drop later on, and it was a fault on my end. The fact is that you could start a "Did Google just do a big update?..." thread at any minute of any hour of any day, and you'll have tons of people who just happened to have ranking changes that day (there's thousands of us here) all speculating and thinking they got hit by some new G update. Most of whom don't post in these threads, they just observe anxiously. Countless sites either lose or gain ranking on any given day, it's been like that way before pandas and penguins stopped becoming our favorite animals.