Perhaps this will help, Alan:

professional |prəˈfe sh ənl|
adjective
1 [ attrib. ] of, relating to, or connected with a profession : young professional people | the professional schools of Yale and Harvard.
2 (of a person) engaged in a specified activity as one’s main paid occupation rather than as a pastime : a professional boxer.
• having or showing the skill appropriate to a professional person; competent or skillful : their music is both memorable and professional.

noun
a person engaged or qualified in a profession : professionals such as lawyers and surveyors.
• a person engaged in a specified activity, esp. a sport or branch of the performing arts, as a main paid occupation rather than as a pastime.
• a person competent or skilled in a particular activity : she was a real professional on stage.

* or working at a professional level (I recognize that not all print guys make their living solely from cartooning).

The breeding ground for a no-win situation, which would be the never-ending migraine headache I referred earlier. Alan would be inundated with rank amateur work, followed by incessant whining when he doesn’t post them.

Stick to what’s working.

I’m sure I’ve missed it if it exists, but is there a magic button I can press to see latest posts first? In other words have the new posts at the top of the page?

I think that’s the very thing you’re complaining about.

As for Ed’s idea of including a daily cartoon on this site, it’s a good one, but fraught with difficulties for Alan.
He would then change from someone who sources and publishes articles about cartooning, to someone who publishes cartoons.
That way CAN lie madness, if it’s not up front and transparent.
What kind of cartoons? Gag a day, strips,
political, caricature, or all of the above?
Whatever type of cartoon, it would have to be Alan’s choice, and in that case some cartoonists would never feature.
If it were me in this situation, I would certainly feature cartoons on the site, but I would not ask for open submissions, choosing to approach cartoonists independently.
In such cases I would also NOT be offering money, as (a) I don’t have it, and (b) the exposure gained on the site would be valuable.
I do offer cartoons to very select sites because I like those sites, I feel part of a community there, and I enjoy having my work seen by my peers.
So there you have the quandary:
Either Alan offers an exposure-only deal to cartoonists whose work he appreciates, or he asks for general submissions and risks offending those whose work he chooses not to run.