Just wanted to add my thoughts about him being a computer expert... I'm actually not going to go down the route of berating him on this particular description. but there's a reason, I promise!
In terms of the
http://sykic.co.uk/ website... Although it looks pretty basic... In terms of coding from scratch, it's pretty modern and moderately complex. The pages are all bootstrapped, so they're responsive (if you resize your browser window, you'll notice all the pages respond and resize automatically - all the pictures on each page do the same thing and a hamburger menu appears when the screen gets particularly narrow, which is what you'll be used to seeing when using a phone or tablet for browsing)
To have a comment section working from scratch code takes a fair bit of coding knowledge (you're talking submission and action scripts).
i.e. something such as:
Code:
<!-- begin htmlcommentbox.com -->
<div id="HCB_comment_box"><a href="http://www.htmlcommentbox.com">HTML Comment Box</a> is loading comments...</div>
<link rel="stylesheet" type="text/css" href="http://www.htmlcommentbox.com/static/skins/default/skin.css" />
<script type="text/javascript" language="javascript" id="hcb"> /*<!--*/ if(!window.hcb_user){hcb_user={ };} (function(){s=document.createElement("script");s.setAttribute("type","text/javascript");s.setAttribute("src", "http://www.htmlcommentbox.com/jread?page="+escape((window.hcb_user && hcb_user.PAGE)||(""+window.location)).replace("+","%2B")+"&opts=470&num=10");if (typeof s!="undefined") document.getElementsByTagName("head")[0].appendChild(s);})(); /*-->*/ </script>
<!-- end htmlcommentbox.com -->
And in the above, he will have had to have set the action parameters and the script, so although it looks like a plain old page, it's definitely more complex than a static web page that many, many businesses still use.
Aside from this, I think the term 'computer expert' gets a little distorted at times. For example, I've seen many people throughout the thread say he can't be a computer expert because the websites are so basic. However, a computer expert isn't necessarily a coding or html expert, and vice versa. He may have built computers, or dealt with computer security, or software bug-testing. None of those things would mean he had to be an expert at html.
The reason I say all this though is to point out that there may have been many, many incriminating things we will never know about because he's cleared them off the computer(s). When the police say search histories have been cleared, I have no doubt they mean a deep cleanse. Yes, files are left in temporary places, but there are many pieces of software that will wipe over deleted and cleared parts of the drive, making recovery of these things impossible. The average computer-user doesn't know about this software, or how to use it... but someone who has knowledge of computers probably would. Police don't just look at the histories tab and say "Oh, it's all gone"; they have forensic departments dedicated to technologies and computers who would have recovered everything they could.
I don't think he's stupid at all - evil, yes... but not stupid. As people keep saying, if it weren't for the discovery of the tank 3 MONTHS later, he probably would have gotten away with it. He left just enough doubt to get away with it. He's made stupid mistakes, but I don't think he's inherently stupid. I think he's clever enough to get a witty, intelligent, wealthy lady to adore him, whilst he plotted her demise to the incredulousness of all those who knew him. That's not stupid. It's evil.