I'm trying not to ask something that's already covered by the other 'beginning web mapping' questions, but I want to do something that I don't see covered here yet. Maybe I'm just missing it.
Basically, I want to create an interactive web mapping site. Here's the way I picture it: there is a main map, showing points (pretend they're campsites). When a user clicks on a campsite, in another pane info on that campsite pops up, along with the ability to make comments on it. The user can also add other points, and draw rough polygons, lines, and add text boxes, that all other users see. It will be kind of a giant scratchpad, or scribble map that all users can contribute to. I`d also like to add some kind of thumbs-up, thumbs-down rating system for any comments on the individual campsites, and overall rating system for each user (this looks pretty daunting to me after typing it out!)
I'm new to web mapping, as you may have guessed, and I think I know how to proceed to get the maps online, but it's the interactive part that I could really use some general direction on. I have mid-level skills with the basic tools: html, css, php, mysql, if that helps.