The most common question I get at grader.com is about how the Twitter Grader algorithm (and associated rankings) works.  Before we dig a bit into the details, it will help to understand the what before the how.  What Twitter Grader is trying to measure is the power, reach and authority of a twitter account.  In other words, when you tweet, what kind of an impact does it have?

So, let’s go into the factors.  Note:  These are NOT in order of priority or weight (and they’re not all weighted equally — not by a long shot).

Algorithm Factors

1.  Number of Followers:  More followers leads to a higher Twitter Grade (all other things being equal).  Yes, I agree that it’s easy to game this number, but we are looking at measuring reach and I did say all things being equal.

2.  Power of Followers:  If you have people with a high Twitter Grade following you, it counts more than those with a low Twitter Grade following you.  It’s a bit recursive, and we don’t get carried away with it, but it helps.

3.  Update Recency:  Users that are more current (i.e. time elapsed since last tweet is low) generally get higher grades.

4.  Follower/Following Ratio:  The higher the ratio, the better.  However, the weight of this particular factor decreases as the user accrues points for other factors (so, once a user gets to a high level of followers or a high level of engagement, the Follower/Following ratio counts less).

5.  Engagement:  The more a given user’s tweets are being retweeted, the more times the user is being referenced or cited, the higher the twitter grade.  Further, the value of the engagement is higher based on who is being engaged.  If a user with a very high Twitter Grade retweets, it counts more than if a spammy account with a very low grade retweets.

The Grade Calculation:  So, those are the factors that go into the calculation of a score.  This score is then used to compare a user against all other users that also have a score.  The grade is calculated as the approximate percentage of other users that have an equal or lower score.  So, a Twitter Grade of 80 means that about 80% of the other users got a lower score.

The Ranking: The absolute ranking is exactly what it sounds like.  Based on all other users scored, what’s your “position” in that list.  A ranking of 5,000 means that only 4,999 other people had a higher score than you (at that point in time).

Elite List:  The elite list is simply an ordered list of the top users (based on ranking) at a given point in time.  This list is updated several times a day.  We also maintain lists of the top ranking users based on a narrower set of users (like those in a specific geography, those that match a specific keyword, etc.).

That’s all I’ve got for now.  Hopefully, this answers some of your questions.  What are other factors you think we should be looking at to compute the Twitter Grade?  Would love to hear your thoughts and ideas in the comments.

Welcome to grader. This is a test. Lets see how this works.

This should be on a different line.

And here’s an image.

This is a test post.  Please ignore.

## Looking for Dharmesh?

If you wandered here by mistake and are looking for Dharmesh Shah, the best place to find him is on his blog here:

http://OnStartups.com