In nearly every Web site that I evaluated that had used frames, they were used in such a manner that significantly detracted from the experience of visiting the Web site. In nearly all cases, good Web design could have accomplished the designer's original objectives without the need for frames or their associated problems. Lack of respect for a full range of typical users. With only the rarest of exceptions, a Web site should be designed to be usable by someone with an older computer over a modem connection. I had never seen before.
Splash screens are nearly always an annoyance.
A splash screen is a very low content Web page that serves as a gateway to a Web site. In reality, these screens are often self-serving monuments that prevent Web site users from finding what they need quickly. If you have ever built a Web site with a splash page and looked at your Web logs to see how many people punt the site after seeing no useful content on the splash page, you will never use one again. Web sites that thought they were print or TV ads. There were quite a number of very elaborately produced Web sites that showed a lack of understanding of how to use the medium to communicate.