Your comics showed the spark of funny throughout, but almost never crossed the line to actual funniness. (Right now you're running at a 20% rate of funny.)
A lot of times you had a funny idea which just wasn't translated well into a 3-panel comic, because there was no punchline. A funny set-up is great, but if it goes nowhere, it leaves the reader without a laugh.
Also watch using emoticons as dialog or thought; when's the last time you said or thought ";_;"? The characters are limited in what they can do but try to work within the limitations instead of hacking it. Part of comics is looking at the pictures, after all.
Anyway, the following four represent the 20% of your comics that were good. (I only posted the one "Internet Cooldudes" comic, although I liked 'em both.)
[Click to view comic: 'Jesus Christ, Supergullible']
[Click to view comic: 'You can tell I'm losing inspiration.']
Your "Internet Cooldudes" comics ring so true... note the 3rd panel, Captain_Sattelite. ;>
[Click to view comic: 'How to spot internet cooldudes - Part 2']
The skull comics (although none were funny besides this one) are very Max-Cannon-esque.
[Click to view comic: '...muh!']
This one started funny, but blew its wad halfway through and degenerated into the comic equivalent of penguin poop.
[Click to view comic: '"Star Trek XXVII: Please, let us die"']
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peddling the funny around since 09/24/2002