Overall, I really like it.
I love the extensive use of JQuery. It’s very impressive.
Here are my thoughts:
I think there might be too much going on on the home page though. All the sliders are cool, but there is sooo much information on the home page, I don’t even want to read it.
The portfolio pages (//www.plaveb.com/work#website-marketing/) are pretty awesome, but not very user friendly. It took me a while to figure out how to go left and right…. Maybe you should have have barely visible arrows visible on default.
The image for "rich web applications" on the home page doesn’t make any sense – at least for a business owner IMHO.
Also this page: //www.plaveb.com/work#web-applicat … /lugnutnet (when I select one design to view) always has "Web Design" highlighted in the sub-navigation, even though I selected Web-Applications.
Nice job! It looks very professional and overall it’s very clean and it’s easy to manage yourself around the website.
And one more thing. I would STRONGLY recommend you to change the way you use the buttons/links in the text-rotator. Let people click the buttons/links before they get the information. If a visitor is very shaky with his hands that would be a problem for him ;)