Always use line breaks...it's incorrect formatting technically if you go by professional standards, but honestly...on the internet it makes everything nice and easy to read. Easy reading makes happy readers. Happy readers makes more views.
I think in the computer age, using a full line break instead of an indent is a better choice. I have perfect vision but I still prefer to do things this way! Besides, reformatting is so easy - just do what you want if you're not working for someone else.
It's as `saintartaud said. And yes you have to make the spacing adjustment yourself, but that's not difficult with a fully-featured word processor's search and replace feature. (Replace each paragraph mark with two paragraph marks, then copy-paste into the site's editing window, but don't save changes from your word processor. Search and replace can also search for formatting, which is how I re-add italics and so on for submission.)
Any work you submit professionally should not have spaces between paragraphs, but that's also an easy adjustment to make before printing.)
Ha! This is most certainly not professional- just something for the amusement of people who are tired of standard fantasy stories. I'm writing it on a bet. I just wanted to pick a style of formatting that would be easy to read and not intrusive or obnoxious.
When posting online, you should ideally have a line space between each paragraph. It tends to make reading onscreen much easier.
For manuscript purposes, it is unnecessary. I usually write work in standard manuscript formatting, i.e. 12 point Courier with double-line spacing. It's very easy to parse on-screen and saves me the effort of having to reformat for printing and/or submission.
I have had all sorts of problems when uploading documents, almost all of which involve DeviantArt eating my line spacing and having to reinsert manually. And I'm ashamed to say that I'm not so competent with Word. Is there a way to format my Word documents that will insert line spacing automatically for both Word and html?
Nope. Just treat it as you would any other paragraph. I've read a few things where the dialogue was clustered within space between, and it made the reading more confusing, since the instinct is to group the lines in the block as one speaker.
I allow only one speaker per paragraph for that very reason. I have a fairly bad case of red tinted visual snow, and characters in larger text blocks have a bad habit of merging together and making quotation marks hard to see. Multiple speaker paragraphs do not help.
Thank you for the advice. I thought that my formatting was generally acceptable, but I am no professional and didn't want my style to be dictated just by what was comfortable for me.