I really love this plugin, and I've been using it for two years straight.
I love how you can copy forms to create forms, and the shortcodes are great.
The biggest issue with this plugin that I'm having is that so often, it doesn't work, due to conflicting with other plugins.
I know that this is a somewhat normal occurrence within WordPress, but it's frustrating to have to always be troubleshooting.
Additionally, I've used FS Contact Form on several of the same sites as Contact Form 7, and I haven't ever had to troubleshoot it.
It would be awesome if this plugin could hold up better. Otherwise, I'll have to switch.