Further more splash pages can cause more problems than just putting your visitors off; they can even scare the search engines away! The splash page in your website design can act as a blockage to any search engines trying to visit your web site in order to rank you within their index, which obviously is the last thing you want to do.
In short.. keep it simple. You wouldn’t add a second front door to your shop to greet your customers, so don’t do the same with your business website.