Are your Facebook Posts Seen? More on Facebook's EdgeRank

It seems this way because it is this way. Facebook build EdgeRank a little over a year ago to filter all posts - by both pages and friends - to try and keep people from getting overwhelmed by the growing number of posts.

Involver has a great description of how PageRank works, the gist is that it looks at the following:

1. Your relationship or "Affinity" - the more often your friends/fans visit your profile/page and interact with your posts by liking or commenting the more likely they will see your upcoming posts
2. The type of post impacts the "Weight" - video, pages and links get more weight than text-only posts. There is an implicit assumption that something to see or click is likely more interesting
3. The timing of the post or "Time Decay" - A post isn't worth as much in a day as it is today. It is also assumed that posts have more value now than they do later and thus they will be seen quickly and then by fewer and fewer people over time... unless further shared or liked of course

One of the implications of this is that you don't want to post TOO often. Just to be clear, you need to avoid posting too much or your posts will reach an ever-diminishing fraction of your fans. If you post a status update then follow it with a subsequent update too soon it preempts the Time Decay of the first.

While there is not hard-and-fast number a good rule of thumb is to not post new updates more than 3 or 4 hours apart to allow each update to reach it's maximum potential - commenting or replying to existing updates is fine.

So, to get the most out of Facebook post visual status updates or links with provocative content that inspires a like or comment and post them a few hours apart?

You may not know but you can schedule your Facebook posts, just click the clock to expand the post scheduler and you can post as many status updates as you'd like and schedule them so as to not diminish the value of any of your posts.