I once implemented that. Just put the askbox on the startpage:
// teaser to ask, askbar, only show for visitors that are not logged in
if( !qa_is_logged_in() ) {
$askQuestionString = 'What do you like to know?';
?>
<div class="ask-teaser-input">
<div class="ask-teaser-inner">
<p>Ask anonymously: </p>
<form method="post" action="<?php echo qa_path_html('ask', null); ?>">
<input onkeyup="qa_title_change2(this.value);" autocomplete="off" id="askboxin" name="title" type="text" placeholder="<?php echo $askQuestionString; ?>">
<span id="similar"></span>
<style type="text/css">
#similar {
display:none;
margin:20px 0 20px 233px !important;
text-align:left;
}
</style>
<script type="text/javascript">
var similarQuShow2 = false; // eetv variable
var minWords2 = 2; // eetv min words before showing similar questions
function qa_title_change2(value) {
// eetv added if: only show similar question if more than 2 words and chars>15
var totalWords = value.split(/[\s\.\?]+/).length;
if(totalWords>=minWords2 && value.length>=15) {
// increase
minWords2 = totalWords;
// show #similar
document.getElementById('similar').style.display = "block";
qa_ajax_post('asktitle', {title:value}, function(lines) {
if (lines[0]=='1') {
if (lines[1].length) {
//qa_tags_examples=lines[1];
//qa_tag_hints(true);
}
if (lines.length>2) {
var simelem=document.getElementById('similar');
if (simelem)
simelem.innerHTML=lines.slice(2).join('\n');
}
} else if (lines[0]=='0')
alert(lines[1]);
else
qa_ajax_error();
});
qa_show_waiting_after(document.getElementById('similar'), true);
$('#similar').show();
$('#similar').css('display', 'block');
$('#similar').css('margin', '20px');
}
else if(similarQuShow2) {
// eetv: we were showing similar questions already, user deleted some chars/words
// reinit
minWords2=2;
}
else if(value.length==0) {
// eetv: hide similar questions if title got removed again by user
minWords2 = 2;
document.getElementById('similar').style.display = "none";
similarQuShow2=false;
}
}
</script>
<input class="ask-boxT-button" type="submit" value="Ask without registration">
<input type="hidden" name="doask1" VALUE="1">
</form>
</div>
</div>
<?php
If you like I could make a plugin of that. But for the work I'd charge 9 USD per plugin download.
Kai