Does it weigh anyones website down?
I assume this was a question for the reviewers, but I'll explain the technology in the mean time, while they are testing the plugin.
How it works is when you want to message your users, you send Google one message for every 1000 users.
Google will then send that message to each of those 1000 people for you.
So if you had 10,000 users the plugin would send 10 messages, which would take less than a second, and Google would send the full 10,000.
This could replace my live chat...
Unfortunatly the messages are only one way, there is no way for the user to responsed to the message besides clicking and being taken to a page.
The way I envision this being used is to announce a now product launch or to direct users to a new blog post on a website.
Users can be directed to any website, it's not just limited to your own.
You could also send them to Facebook pages, Twitter post, etc.
My examples are rather simple and I can guarantee people will come up with more elaborate ways to make money using this plugin.
Does ad blocker cause any issues?
Because the messages are in the browser but outside of a webpage there is no way for adblockers to stop the message, since adblockers only have access to the content of a webpage and not the actual browser itself.
Looks really good. Can you adjust the message box size? Also, can you add an animation to it? Like very simple gif?
At this point in time, you can only change the Image, Title, Body Text and URL of the message.
With every update to Chrome, Google expands the features of the messages so this might be a possibility in the future.
A gif will be shown, but they wont animate. Again this might be possible in the future, but since this technology is only 2 months old and is on the cutting edge, at this time you can only display non-animated images.