Limited account status means the user can no longer generate revenue or withdrawal earnings from the site. Accounts that go into a limited status are the result of an audit on the account which determined that a large number of clicks are invalid or were generated fraudulently.
Linkbucks users may not have invalid clicks, including but not limited to clicks generated by:
Fraudulently generating impressions via: bots, scripts, auto-refreshes, iframes, pops, etc.
Using links for uses other then intended such as popping intermissions pages.
Hacking other websites illegally to display or pop your links.
Embedding your links in malware or programs without user consent.
Distributing illegal content or child pornography.
Unwelcome spamming of other sites without permission using your links.
Encouraging your users to click on advertisements that appear on links.
Incorrectly categorizing your link content as adult or non-adult.
Extremely poor ad click-through rate on your links. (this is mostly due to the above)