This is a really nice gallery addon. While it's not a full on gallery plugin, I love the fact that I'm getting a great image showing up in my posts in a size I like.
Other gallery plugins for me, create 3 sizes, including wordpress's own media. While this has it's place, when you want to show a large image without opening a popup window, it's nearly impossible to do.
What I'd really love to see tho in this plugin is an ability to filter by category or tags on the images in the edit post or page area. Like the wordpress media manager, once you have a substantial amount of images it just increases the load time. Imagine opening a new post and having the same thing happening with gmedia. It would be really great to be able to filter them to the category or tag you created for the images so your only loading those images in the category or tag. For that reason alone I don't understand why category or tags are even needed.
Please note tho, I am not using this as a gallery, I use this to post images in articles only, so for me, I'd just like to see that ability added.
I love this plugin tho, it creates a nice, crisp image, it's so easy to setup, and I would even go to the pro version if I knew I could filter those images on the post or page type edit page if this gallery addon did that.
That is the reason for 4 stars, if you want me to change my rating, please add that feature. :)