I am using Disqus and can anwser for this platform :
1) You have the option to save comments both on Disqus and locally on WordPress.
2) This way, if you want to switch to default comments, they will already be there. On the other side, you cal also import local comments to Disqus, if you were using the default comment system and want to switch to Disqus.
3,4) You can share your comment once created, you can test this yourself on any disqus enabled website
Related Posts:
- adding a text message beside the comment submit button
- Comment section not showing correctly
- Disqus deleted comments are syncing with wordpress but active comments do not
- Add a Custom Field in Comment Box next to the Text area
- How to remove WordPress Default Comment? not Facebook
- Disqus comment system not show
- How is it possible to create Multi part sections where people can answer or comment or vote on various parts of a page’s content as given example?
- Disqus comments count taking long to update
- Jetpack Comments Change Placeholder Text
- Reply form used in wordpress.com
- How to export comments in WordPress?
- What are the package and subpackage comment for?
- How to run Jetpack from localhost? [closed]
- When would it make sense to use Jetpack?
- Experiences with adding Nonces to the comment form
- Is there a plugin for posting inline comments, like in MS Word? [closed]
- How to tell if Jetpack’s Photon is active?
- Facebook comments box on front page
- Are there any drawbacks to install IntenseDebate on my blog?
- Jetpack plugin (ShareDaddy): Prevent share buttons showing on custom post types?
- Installing Facebook comment plug in without loosing all previous wordpress comments?
- Custom comment type maybe?
- Use comments as notes, visible for comment author only
- Custom values are not translated
- WordPress 3.1 and Disqus throws Warning: number_format() error in Posts List
- How does WooCommerce display a custom comment_type in Comment Admin?
- How to prevent spam comments?
- Intercept comment form submit/list by hook/filter
- Plugin Functionality Only for Editor and Administrator
- Tracking Disqus comments on Google Analytics
- Override comments.php template with plugin
- Leveraging WordPress Comments on Custom Plugin Object page
- Get total number of comment of the posts written by an author
- Display comments of users on single page
- Function to prevent users from trashing comments
- add_filter comment_edit_redirect not working
- How do you override the default comment template?
- How to change commenter links to /user/user_id?
- Facebook plugin shows existing comments
- unregistered user can write in blog page – possible? how to?
- How can I get WordPress to save comments in markdown format?
- How to stop xmlrpc attacks without disabling component to allow JetPack to work in WordPress?
- Creating a plugin to sanitize comment and the url field before display only
- Jetpack Comments with fall-back
- WordPress comments not appearing in blog posts, likely because of Redux template. Could I fix this with a plugin that adds a comment form as a block? [closed]
- posts comments goes to trash
- Include comments form in plugin page
- WordPress 4.2.1 pre_get_comments doesn’t work after update
- Integrate Facebook comments with native comments
- Filtering get_permalink in Jetpack / ShareDaddy
- Post Comments with Ajax in WordPress
- Redirect to another page using contact form 7? [closed]
- Custom setup of wordpress comments that are displayed
- Add back to post link on blank comment post error page
- Is it possible to remove subscription box from Jetpack stats page? [closed]
- Cropping images from top center using Jetpack Photon
- Edit / Change Jetpack Mobile Theme [closed]
- Flag Comment as inappropriate button plugin
- Help with comments.php
- Some WordPress Posts are automatically becoming comments on other Posts
- Comment IP Plugin – Fixing onfocus=’this.select()’
- Moving Jetpack buttons to appear below the first H2 title on all project/post pages [closed]
- Moving FB comments at the end of page
- Comment Approve – Add custom function when comment is approved
- how to add a comment button to be displayed only for the posts in the home page [closed]
- Individual Comment Notification Setting For Post Author
- How to save comment name email url fields?
- How to edit link for comment count
- Separate jQuery for Individual Comments?
- Facebook and Twitter share buttons not working [closed]
- Pull comments from one page/post into another page/post?
- WordPress Stats Plugin: Display Post Views [closed]
- Jetpack: Subscribe via e-mail [closed]
- Engadget Like most commented plugins
- Does anyone know what’s the plugin for this Comment Section?
- After installing JetPack, can I delete the WordPress stats plugin?
- How translate it? Intensedebate
- Display WordPress comments before the plugins?
- Why the internal link get converted into a comment?
- Oops! That page can’t be found
- Enable comments pagination only amp page
- Show views count for pop up post
- Comment restrictions Wodpress
- How to fix slow comment query?
- How can I disable Jetpack plugin on mobile?
- AddThis Plugin adding html comments in P tags
- How to show a message to a user?
- Disqus comment system – change comments number before “load more” button
- Paginated Comments “reply” does not work!
- How do plugin updates work?
- Comments template only linking to one post
- Creating a comments voting system
- page creator to leave comments ONLY
- Why links are not linked if edited comment?
- Disqus plugin outputs script as literal text
- How to fix vanilla comments extra iframe space
- which is this plugin ? [closed]
- I’ve installed Jetpack but can’t edit the CSS to my blog?
- How to Allow Users to Select Recipients In a WordPress Comment section?
- Transfer wordpress comments form on another post [closed]