Online marketing and Interface designing

There has been intricate relationship between the marketing as well as the computer interface designs. The products and services that we marketeers sell online needs to be presentable. If the products and services selling portal itself is well designed it half way done for us.

Eight Golden Rules of Interface Design

Strive for consistency
consistent sequences of actions should be required in similar situations
identical terminology should be used in prompts, menus, and help screens
consistent color, layout, capitalization, fonts, and so on should be employed throughout.
Enable frequent users to use shortcuts
to increase the pace of interaction use abbreviations, special keys, hidden commands, and macros
Offer informative feedback
for every user action, the system should respond in some way (in web design, this can be accomplished by DHTML - for example, a button will make a clicking sound or change color when clicked to show the user something has happened)
Design dialogs to yield closure
Sequences of actions should be organized into groups with a beginning, middle, and end. The informative feedback at the completion of a group of actions shows the user their activity has completed successfully
Offer error prevention and simple error handling
design the form so that users cannot make a serious error; for example, prefer menu selection to form fill-in and do not allow alphabetic characters in numeric entry fields
if users make an error, instructions should be written to detect the error and offer simple, constructive, and specific instructions for recovery
segment long forms and send sections separately so that the user is not penalized by having to fill the form in again - but make sure you inform the user that multiple sections are coming up
Permit easy reversal of actions
Support internal locus of control
Experienced users want to be in charge. Surprising system actions, tedious sequences of data entries, inability or difficulty in obtaining necessary information, and inability to produce the action desired all build anxiety and dissatisfaction
Reduce short-term memory load
A famous study suggests that humans can store only 7 (plus or minus 2) pieces of information in their short term memory. You can reduce short term memory load by designing screens where options are clearly visible, or using pull-down menus and icons
Prevent Errors - The third principle is to prevent errors whenever possible. Steps can be taken to design so that errors are less likely to occur, using methods such as organizing screens and menus functionally, designing screens to be distinctive and making it difficult for users to commit irreversible actions. Expect users to make errors, try to anticipate where they will go wrong and design with those actions in mind.