A LinkIn profile page is a great way to establish a network of working professionals within a field. A LinkIn profile can also provide exposure to any individual. Employers can easily reach individuals and have access to these individuals resumes and experience. LinkIn however is limited to the users who have a LinkIn account. Moreover, some employers may not place a high value on LinkIn as a recruiting tool or as a reliable method to search for candidates.
A personal Web site is also method to have an on line presence. A web site can present information about a professional without any restrictions. However a personal website may be difficult to find on the world wide web hence it may have a low traffic preventing the content from being delivered. A web site may also cost money to have.
Both these techniques are useful depending on the purpose for the on line presence of individuals.