[OpenLayers-Users] Sharing/editing maps on a website?

[Dimos]

Dear OpenLayers Mailing List,

I am sorry if this has been already covered in previous posts: 

I would like to share maps online, on a high resolution imagery background, and permit visitors (average pc users) in an easy manner to draw and/or add text comments to the maps, and then share again with the map user list (as in commonly used proprietary software).

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Is there any website offering that with OpenLayers, so an average pc user, can log in, draw maps, post comments and share with a specific map user list?
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Thanks,

Dimos