The way I look at at, and I'm no expert, is that people find your site from a search and they are searching on some terms like "compter repair London" or whatever. I suspect they want to see those terms or very similar ones when they visit the site. I also think that since they are usually clicking on several sites in the results page that they need to see their needs met in a matter of seconds. I don't think they look too hard before pressing the back button. If you convince them to call right now they might not look at the others in the search.
So I look at any landing page as advertising poster or flyer. So you need a headline that meets their needs, a picture that lets them know what you are offering is what they are wanting, some benefits they want to hear about and a call to action to the next stage - e.g. your phone number writ large and clear. That way they click on the link, like what they see and call.
I don't believe they are interested in seeing news, articles, the latest virus warnings etc at that point. Sure they might be interested in those if they are searching on those or if they are regular customers who use your site for those reasons, but then you should have a seperate page for that. I personally don't think there should be any distractions from the main goal which is to tell them what they want to hear and get them to contact you.
Different sites work quite differently. Technibble for instance is very much about articles, forum and information. So it makes sense to have some of that on the main landing page.
In your site
http://www.jteknet.net/ you don't say what you do. You have a whole page there and in all that valuable space is a massive picture of some computers, a did you know (which is actually quite a good thing since it sells something), and some news about you being snowed in! I cannot imagine that is an optimum use of space. When people look at a web page they start at the top left and scan the banner area so that must tell them what you do in text and maybe a picture or icon. The bit below that in the middle of the screen is the key information area. People expect to read that once the banner has told them it's worth proceeding. The the left column is the next most important area so a menu which informs is fine or some boxes or whatever that sell some benefits or make some useful sales point.
Try it out for yourself. Think of some service you want or whatever, search on it and look at the websites quickly and decide who to go with. Notice what you look at first and what you think about. You have about 10 seconds and a square foot of space to sell your service that means you have to say something clearly and quickly, you cannot say too much, you cannot have too much on the screen that takes away from what you are saying. A picture can say a lot of it instantly.
The colors for the site are really nice to. My problem is that the main page is not clean. Im sure its just me but the hole 3 colomun layout is not working for me. Maybe just have 2 colomuns.. Colomun 1 shows your the blog entires and the second colomun could be your Tags, search bar, twitter feeds etc etc.. 
Just have the other theme up as it will direct you to articles since I haven't had time to get my services page completed.
