WordPress.org

Working with the basic functions is enough for my small blog. When I'll make some cash, probably I'll buy the pro version to support the developer.

Excellent plugin, very user friendly, many features.

This must be the best, most powerful and if that wasn't enough, also the most supported advertise management plugin that's out there for WordPress!

I really like this plugin, it makes it super easy managing stuff, and the support on it is really well too! Arnan is one of the best developers that thinks about his users and updates regulary fixing errors that might be, all in all this is the ultimate solution for ads management!

This plugin meets all of my needs as a publisher. It's pretty robust, and I'd even go for the pro version once I need to use the extra features.

Practically everyone else uses it, so there's plenty of tutorials online too.

Completely and utterly disgusting business practice - if you want to create a Pro version, add new features and create a Pro version. Don't cripple the existing free version and then try to charge for the exact same features.

I'm curious, when the WordPress built-in upgrade said there was a new version, did it actually say "This upgrade will remove 2/3 of the features you've got and make the plugin useless. But you can always buy them back."

The author is concerned to update the plugin and try to solve the problems of the users.

Easy way to add ads to your site and track clicks.

After the update, the plugin is nothing as crippleware which is missing the important functions.

I used the free version for a couple months and then upgraded to Pro - $30 is nomimal for the great features you get. It works well (on my site) and has nice stats. Much better than Bannerize, the other one I tried. The support is fantastic too. Nice to get a reply within less than an hour instead of posting on a forum and hoping/waiting for a useful reply.
Frankly I probably never would have donated to the free plugin out of pure laziness, but I am more than happy to pay for PRO whatever the reason. I wonder how many people that are taking the time to complain about the free version, took the time to donate.

If you do not have this, do not install it. If you have it and it is working NEVER UPGRADE!

The author has removed functionality from every upgrade to try to sell the Pro version, so people with substantial ad databases have been his beta testers without their knowledge. Actually, there is a lot of stuff here that you won't use if you are a small blogger which could be basis of a commercial version, but the basic stuff is being removed too. So if you are a small guy with many ads you are SOL.

If you have a small database, consider replacing this now. If you have a large database, back it up and back up your working version of the plugin in case you accidentally upgrade or have to adapt to WP changes.