1. Designing a site with large slow loading pictures and fancy flash presentations.
99% of people surfing internet are looking for information quickly. When you place large fancy pictures, midi music, and slow loading flash presentations this simply keeps your potential client waiting for information that they are looking for.
Most likely they will not wait but click off to another site.
Why should your prospect have to choose between an html or flash site? Why should he have to download software just to view your site? All this delays your customer from getting information he wants and from buying.
Keep pages simple, easy to read, fast loading and to point!
If you do not believe me check out Yahoo's or Microsoft's web design. It is very simple and these guys are billionaires.
2. Designing a site with no central theme or focus.
You cannot be everything to everybody. Have you ever seen those sites with dozens of different affiliate programs none of which relate to each other? They look like a flea market!
Stick to your topic. The more specific better. The internet contains so much information that you are better off being an expert in your niche than trying to appeal to everyone. If you have no focus value of your site is diluted and it will actually appeal to no one rather than everyone.
3. Not placing your phone number and contact info conspicuously on your site.
The internet is great but lets face it. Way more money is made off line than on line. Many people, including myself, want to make sure that there is a real person behind that website before parting with green.
If your clients can pick up a phone and contact a real person you have gained instant credibility. You also have distanced yourself from your competition.
I love seeing my competitor's fancy websites with no phone number! More business for me!
4. Using free web hosts.
If you are serious about your business you should run from word free! Yes you heard me. Free is a bad word if you want to make money.