Steve has offered some fantastic suggestions. I might just borrow some of those myself.
You seem to be trying to capture so many different types of clients. Perhaps you should just focus on one genre such as portraiture and then slowly expand Trying to target your marketing to so many different areas can be exhausting and expensive, unless of course you have a team of photographers, each of whom can focus on their specialty area.
Photography is such a competitive business and apart from word-of-mouth, your website is perhaps your most cost effective form of marketing. Getting visitors to your site is the first challenge, engaging them and converting to sales is another. My first tip would be to smarten up your web site, especially if you want to appeal to corporate clients. I would definitely get rid of the pink and make sure you are displaying only your best images.
I had a quick browse through your galleries and at first thought you only had a couple of images in some categories. I then realised that you had to scroll over the image to find the arrows to lead you to the next image. On those images with white backgrounds it is very hard to see the arrows.
There are some really nice gallery templates available. I think with photography, the KISS principle always works best. If you are building your own web site using a template I would be tempted to choose one with a less complex background.
Of course, these are just my opinions. I would love to make lots of similar changes to my own sites.....when I can find a spare moment that is.
Also belonging to professional organisations such as AIPP or WIPM help with your profile and to instill consumer confidence. They also allow for networked marketing opportunites. I know from experience (from having worked in the photography industry) that many brides will search for a photographer who has previously won awards for their work, especially AIPP. Enter your work in as many competitions as you can. Winning entries are often displayed at large events such as PMA and wedding expos. That's great exposure that doesn't cost much at all.
Other little things which cost very little are;
* when photographing a wedding, make sure all members of the bridal party leave with your business details and if you can, get their email details. After the wedding, send them a quick email thanking them for helping to make the bride and groom's day and photo session so successful. Learn their names and leave a great impression. Chances are that they might soon be getting married too and will be on the lookout for a photographer.
* A blog and social networking
* Sponsoring competitions run by industry related web sites.
OK, I know I have given more than three idea and they are not all specifically advertising ideas, but perhaps they might be helpful.