I fear you've moved from semantics to etymology.
If you would like to examine additional meanings for "ignore," we certainly can. Let's start with Merriam-Webster.
http://www.merriam-webster.com/dictionary/ignore
ignore
Etymology:
obsolete ignore to be ignorant of,
1
: to refuse to take notice of
2
: to reject (a bill of indictment) as ungrounded
Your attempting to impose a defintion for ignore that is obsolete and no longer part of modern English. Modern definitions for ignore indicate a conscious and/or deliberate refusal to acknowledge the person or thing being ignored. Consequently, people cannot ignore DCFanatic without first being aware of the item he is offering. This modern definition for ignore is validated in numerous other dictionaries.
Dictionary.com Unabridged (v 1.1)
ig·nore
1.to refrain from noticing or recognizing:
to ignore insulting remarks.
2.
Law. (of a grand jury) to reject (a bill of indictment), as on the grounds of insufficient evidence.
http://en.wiktionary.org/wiki/ignore
ignore
1. To deliberately pay no attention to.
2. (
obsolete) Fail to notice.
American Heritage Dictionary
ignore
To refuse to pay attention to; disregard.
Kernerman English Multilingual Dictionary (Beta Version)
ignore
to take no notice of; to pay no attention to
Example:
He ignored all my warnings.
Even in the Kernerman defintion, which seems as if it might corroborate your purported usage of ignore, the example sentence clearly shows that the failure to take notice is deliberate. Consider this: If I can't hear a person's cries for help because he's 100 miles away from my position, is it more accurate to say that...
1) I ignored his cries for help, or
2) I was not aware of his cries for help.
Number 2 is clearly the more appropriate and accurate choice. Number 1 is, at best, a poor choice of words and, at worst, misleading. Given your dogged approach to accuracy, you of all people should appreciate this distinction.