My own comic is an example, although my skill at comics is questionable. Here's a
simple example of an uncluttered page with relatively easy-to-read bubble layout. My handwriting isn't great, either, but I find I hate the way it looks when I use fonts. (EDIT: Warning, my comic is NSFW.)
If I make errors - and I frequently do - I just erase that bit and do it again.
While I won't claim to be an expert, I think there's a case to be made for putting your word balloons right on the original, especially if you're hand-lettering. I find most comics that use "after the fact" word balloons (like the example above) are much harder to read and the flow doesn't feel as natural. Maybe it's because you can leave the exact placement of the balloons until after you've drawn everything, so you don't pay quite as much attention to making them get along perfectly with your art.
I do a scribbled version of the lettering and balloons right alongside my roughs. I think it makes the word balloons part of the art, rather than slapped on top.
I don't know which browser you're using... for Chrome, it's (wrench icon)->tools->clear cache and browser data. For Firefox, it's (retarded red firefox button)->history->clear recent history (click the advanced button).
But I've been thinking, it's probably not your browser if you've tried it on other computers, because they have different caches and cookies. It sounds like it's a problem with your ComicFury account. Have you tried logging out of ComicFury and then logging back in?
I find that most of the people I admire are ones that kill their ideas early. Old ideas are often not as good as they appeared when you were younger and less experienced, and fleshing out new ideas is a skill that needs practice as much as writing or drawing.
Visual character design is one of my weak points. I'd really love to see a lot more posts and tutorials about visual character design!
In terms of designing their personalities and preferences, I try to think more about how they'll serve the story, rather than whether they are interesting on their own. Nearly every cool character from comics and movies has a simple personality: it's how the story works through them that makes them cool, and how they develop in response to that.
For example, Darth Vader is really not terribly interesting in terms of personality or preferences. He's pretty much The Faceless Evil Guy. Even if his visuals were not as cool, though, he would still be an interesting villain simply because of how the story moves through him.
I like a loose and fluid feeling to the art. A lot of comics, even popular ones that everyone else likes, have a kind of rigidity to their poses and framing. It makes reading the comic feel like driving a square-wheeled unicycle, no matter how amazing it otherwise looks or reads.
I think of it from the other angle: instead of how often should someone post to please their audience, maybe the question should be what rate serves you best?
A fast rate - one per day, for example - will let you improve your skills rapidly. A slower rate - three per week, one per week, or even slower - would let you use your free time to do other things.
I generally try to post one per day, although that slows down if I'm doing multiple comics or work catches up to me. But, on the other hand, I don't believe in spending a lot of time on the polish, so maybe I would post slower if I was doing color.
I've owned all of Wacom's products. I recommend the Bamboo. Eventually you'll probably need to upgrade to something with more sentivity, functionality, and the very useful buttons, but the Bamboo is great for students.
I like the Intuos better than the Cintiq: the Cintiq always gives me a cricked neck after a few weeks. The Intuos 4 is particularly nice, it's the first time I've been able to completely give up on the keyboard.
All of these can have surfaces added to them to protect them from harm and give them textures, but I don't bother. Just remember that your skin oil and many things like headphones can discolor the surface and change the surface texture some, so don't use it as a table surface!