I agree with Twig. I don't wish to be rude but it's an ugly ass blog at the moment. The lay-out is confused and looks amateurish and unwelcoming. You have to create a professional, slick environment if you want people to be comfortable getting their credit cards out, which is the ultimate aim. I realise you are just a launching off point and the more professional sites of your sponsors will take over (if you can get the traffic that far) but your current design will turn a lot of people off.
I agree with standardizing the picture sizes, but I would also standardize that each post needs a description - at the moment most of the posts on there have a title and a picture and that's it. Have a description with each post, a standard sized picture with each post and tidy up the lay-out (for example your Fling advert down the right doesn't even fit in the green panel (change the green colour too by the way).
I would make the advertising a bit more subtle too - at the moment you have your mis-fitting Fling adverts down the left and right side and your Fling pop-up in the bottom right corner - these dominate the page and your posts get lost (yes I know the aim is to get people clicking on the adverts but they won't if they look "thrown in" and don't even fit). Plus you want the visitors to come back time and time again so you need to create a good surfing environment where the adverts "fit" as part of the overall design.
To be honest there are some VERY cheap blog designers on GFY. For the amount it will cost you I would definitely get one of them to redo the design before you start working your tits off promoting the blog. You spend your time on the posts and traffic and get a cheap blog designer to sort the lay-out. Hope that helps!
